91Ó°ÊÓ

Which of the following is not a factor of the polynomial $\mathbf{45}{a}^2−\mathbf{80}{b}^2$?

F 5

G$\mathbf{3}a−\mathbf{4}b$

H$\mathbf{2}a−\mathbf{5}b$

J$\mathbf{3}a+\mathbf{4}b$

Find each product.$\mathbf{(}\mathbf{x}\mathbf{+}\mathbf{2}\mathbf{)}\mathbf{(}\mathbf{x}\mathbf{−}\mathbf{5}\mathbf{)}$

Factor each trinomial, if possible. If the polynomial cannot be factored, write prime.

$\mathbf{4}\mathbf{−}\mathbf{28}\mathit{a}\mathbf{+}\mathbf{49}{\mathit{a}}^{\mathbf{2}}$

Factor each trinomial, if possible. If the polynomial cannot be factored, write prime.

${\mathit{x}}^{\mathbf{4}}\mathbf{−}\mathbf{1}$

Factor each trinomial, if possible. If the polynomial cannot be factored, write prime.

${\mathit{x}}^{\mathbf{4}}\mathbf{−}\mathbf{16}{\mathit{x}}^{\mathbf{2}}$

Solve each equation. Check your solutions.

${\left(x−5\right)}^{\mathbf{2}}\mathbf{=}\mathbf{121}$

Solve each equation. Check your solutions.

$\mathbf{4}{\mathit{c}}^{\mathbf{2}}\mathbf{+}\mathbf{4}\mathit{c}\mathbf{+}\mathbf{1}\mathbf{=}\mathbf{9}$

Solve each equation. Check your solutions.

$\mathbf{4}{\mathit{y}}^{\mathbf{2}}\mathbf{=}\mathbf{64}$

Solve each equation. Check your solutions.

$\mathbf{16}{\mathit{d}}^{\mathbf{2}}\mathbf{+}\mathbf{40}\mathit{d}\mathbf{+}\mathbf{25}\mathbf{=}\mathbf{9}$

A sidewalk of equal width is being built around a square yard. What is the width of the sidewalk?