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Questions  >>  Olympiad-Math  >>  Class 9  >>  Polynomials
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If the roots of the equation $ax^2 -bx +c=0$ differ by $2$, then which of the following is true?


$( A ) b^2=4c+4 \\ ( B ) c^2=4a+b \\ ( C ) b^2=4c+1\\ ( D ) (a^2)*(c^2)=4(a+c)$

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