Recent questions tagged ch-7

If $x +\large\frac{1}{x}$$=6$ find $x^2+\large\frac{1}{x^2}$

asked Jun 3, 2015 by meena.p

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A monomial multiplied by a monomial always gives a ____________

asked Jun 3, 2015 by meena.p

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$331$ students went on a field trip. Six buses were filed and $7$ students travelled in cars . How many students were in each bus ?

asked Jun 3, 2015 by meena.p

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You bought a magazine for $5$ and four eraser . you spent a total of $25$. How much did each eraser cost ?

asked Jun 3, 2015 by meena.p

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Fill said half of her comic books and then bought sixteen more she now has $36$ with how many did she begin ?

asked Jun 3, 2015 by meena.p

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Solve : $2x+20 \%$of $x =12.1$

asked Jun 2, 2015 by meena.p

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Find the perimeter of a rectangle with sides $8x+7x+3$ and $ 4x-3x-7$

asked Jun 2, 2015 by meena.p

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The sides of an triangle are $3x+1,4x+2$ and $5x$. Find the perimeter of the triangle.

asked Jun 2, 2015 by meena.p

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The length and breadth of a rectangle are $(3a-4b)\;cm$ and $(5b_+2a)\;cm$ Find its perimeter .

asked Jun 2, 2015 by meena.p

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What is the area of a rectangle of length $4xy$ and breadth $2xy$ ?

asked Jun 2, 2015 by meena.p

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What is the product of $3xy,4xy$ and $2xz$ ?

asked Jun 2, 2015 by meena.p

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What is the sum of $7xy+5yz-3xz$ and $2xy+4yz+2xz$

asked Jun 2, 2015 by meena.p

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The value of $(3x^3+9x^2+27x) \div 3x$ is

asked Jun 2, 2015 by meena.p

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Factorize $P^2+30P+216$

asked Jun 2, 2015 by meena.p

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The value of P for $51^2-49^2=100p$

asked Jun 2, 2015 by meena.p

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$(a-b)(a^2+b^2+ab)-(a+b)(a^2+b^2-ab)$

asked Jun 2, 2015 by meena.p

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$(b^2-49)(b+7)+343$- evaluate

asked Jun 2, 2015 by meena.p

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In a polynomial , the exponents of the variables are always

asked Jun 1, 2015 by meena.p

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The product of a monomial and binomial is a

asked Jun 1, 2015 by meena.p

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Evaluate : $441^2 - 59^2 $

asked Jun 1, 2015 by meena.p

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Evaluate : $0.82 ^2 + 2 \times 0.82 \times 0.18 +0.18^2 $

asked Jun 1, 2015 by meena.p

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$(2x+5y)^2-(2x-5y)^2$

asked Jun 1, 2015 by meena.p

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If $ x-\large\frac{1}{x} $$=2$, Find the value of $x^4 +\large\frac{1}{x^3} \div \bigg(x^2 +\large\frac{1}{x^2} \bigg)$

asked Jun 1, 2015 by meena.p

1 answer

Evaluate : $176 \times 176 -124 \times 124$

asked Jun 1, 2015 by meena.p

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If $ x^2 +\large\frac{1}{x^2} $$=23$. Find the value of $x+\large\frac{1}{x}$

asked Jun 1, 2015 by meena.p

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Find the value of $36x^2+49y^2 +84 xy$ when $x=3; y=6$

asked Jun 1, 2015 by meena.p

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Simplify: $\bigg( \large\frac{2}{5}$$x^2 + \frac{7}{9}$$y^2 \bigg)^2-\bigg( \large\frac{2}{5}x^2-\frac{7}{9} $$y^2\bigg)^2$

asked Jun 1, 2015 by meena.p

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If $ (x+y) =11$ and $xy =30$ . Find the value of $x^2+y^2$

asked Jun 1, 2015 by meena.p

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Simplify: $2a^2 (3a^2-4)+4a(2a^2+3 )-12 (a-1)$

asked Jun 1, 2015 by meena.p

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Multiply $4xyz- 2xy$ by $ \large\frac{-3}{5}$$xy$

asked Jun 1, 2015 by meena.p

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Find the value of $6x^3 \times (-7x^2y^2) \times (1.1 xy)$ at $ y= 0.5,x=1$

asked Jun 1, 2015 by meena.p

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Simplify : $2x^2-4x+5 -\large\frac{1}{3}$$(x^2-5x+7)$

asked Jun 1, 2015 by meena.p

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Simplify : $( 1+\large\frac{1}{2}x +\frac{1}{\sqrt 2} x^2)$$+(5 -\large\frac{2}{3}x $$+\sqrt 2 x^2) -(4 - \large\frac{1}{3} x -$$ 2 \sqrt 2 x^2)$

asked Jun 1, 2015 by meena.p

1 answer

What must be added to $x^3+3x-8$ to get $3x^3+x^2+6$?

asked Jun 1, 2015 by meena.p

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Find the value of $\large\frac{6.25 \times 6.25 -1.75 \times 1.75}{4.5}$

asked Jun 1, 2015 by meena.p

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Subtract $b(b^2+b-7)+5$ from $3b^2 -8$ and find the value of expression obtained for $b=-3$

asked Jun 1, 2015 by meena.p

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Find the value of a if $pqa=(3p+q)^2-(3p-q)^2$

asked Jun 1, 2015 by meena.p

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Find the value of a if $8a=35^2 -27^2$

asked May 29, 2015 by meena.p

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If $x-y =13$ and $xy=28$ then find $x^2+y^2$

asked May 29, 2015 by meena.p

1 answer

If $a+b =25$ and $a^2+b^2=225$ , then find $ab$

asked May 29, 2015 by meena.p

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The cost of a chocolate is $Rs. (x+y)$ and Rohit bought $(x+y)$ choclates . Find the total amount paid by him in terms of x. If $x=10$, find the amount paid by him

asked May 29, 2015 by meena.p

1 answer

The height of a triangle is $ x^4 +y^4 $ and its base is $14 xy$ . Find the area of the triangle .

asked May 29, 2015 by meena.p

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If $p+q =12$ and $pq= 22$ then find $p^2+q^2$

asked May 29, 2015 by meena.p

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The area of a rectangle is $x^2+7x+12$. If the breadth is $(x+3)$ then find the length .

asked May 29, 2015 by meena.p

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The area of a square is given by $4x^2+12xy+9y^2$. Find the side of the square.

asked May 29, 2015 by meena.p

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$(pq-qr)^2+4pq^2r$

asked May 29, 2015 by meena.p

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Simplify $(3x+2y)^2+(3x-2y)^2$

asked May 29, 2015 by meena.p

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Square of $3x-4y$ is

asked May 29, 2015 by meena.p

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Product of $6a^2 -7b +5ab $ and $2ab$ is

asked May 29, 2015 by meena.p

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Volume of a rectangular box (cubord) with length $=2ab$, breadth = 3ac and height $=2ac$ is

asked May 29, 2015 by meena.p

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