Browse Questions

# If the binary operation * on the set of integers Z, is defined by a*b=$a+3b^2$ then find the value of 2*4

Can you answer this question?

Toolbox:
• An element $e \in N$ is an identify element for operation * if $a \ast e=e \ast a$ for all $a \in N$
The binary operation $*$ is defined by $a*b=a+3b^2$
$\therefore 2*4=2+3(4)^2$
$\qquad\quad=2+48$
$\qquad\quad=50$
answered Sep 23, 2013