Question

(8z − 9)(8z + 9) = az2 − b what is the value of a?

Answer 1

The people that are answering this arn't doing it affectivly because there not realizing, B=2. Add that to there equation and simplify it.

Answer 2

solve for a.

(8z−9)(8z+9)=az2−b

Flip the equation.

az2−b=64z2−81

Add b to both sides.

az2−b+b=64z2−81+b

az2=64z2+b−81

Divide both sides by z^2.


`\bold{ (az^2)/(z^2) = (64z^2 + b - 81)/(z^2)} \\ \\ a = \pmb{ \boxed{\boxed{\boxed{(64z^2 + b - 81)/(z^2) }}}}`