91Ó°ÊÓ

In the following exercises , simplify the equation $\left(rs −27\right)\left(rs +27\right)$.

In the following exercises , simplify the equation $\left(2x^2 − 3y^4\right)\left(2x^2 + 3y^4\right)$.

In the following exercises , simplify the equation $ {\left(m − 15\right)}^2$.

In the following exercises , simplify the equation ${\left(3d + 1\right)}^2$.

In the following exercises , simplify the equation ${\left(4a + 10\right)}^2$.

In the following exercises, find each product.${\left(3z+\frac{1}{5}\right)}^2$

For function$f\left(x\right)=x-1$and$g\left(x\right)=4x^2+3x-5$find (a)$\left(f·g\right)\left(x\right)$ (b )$\left(f·g\right)\left(-2\right)$

In the following exercises, add or subtract the monomials.

$x{y}^2-5x-5y^2+19y+5z$

For function $f\left(x\right)=2x-7$and $g\left(x\right)=2x+7$

find (a)$\left(f·g\right)\left(x\right)$ (b)$\left(f·g\right)\left(-3\right)$

For function $f\left(x\right)=7x-8$and $g\left(x\right)=7x+8$, Find (a)$\left(f·g\right)\left(x\right)$ (b)$\left(f·g\right)\left(-2\right)$