91Ó°ÊÓ

Q. 170

Page 712

Explain why $−5^3={(−5)}^3$ but $−5^4≠{(−5)}^4$.

Q. 171

Page 713

Jorge thinks${\left(\frac{1}{2}\right)}^2$ is 1. What is wrong with his reasoning?

Q. 172

Page 713

Explain why $x^3·x^5\mathrm{is}{x}^8$, and not $x^{15}$

Q 173.

Page 727

In the following exercises, multiply.

$4\left(w+10\right)$

Q 174.

Page 727

In the following exercises, multiply.

$6\left(b+8\right)$

Q 175.

Page 727

In the following exercises, multiply.

$-3\left(a+7\right)$

Q 176.

Page 727

In the following exercises, multiply.

$-5\left(p+9\right)$

Q 177.

Page 727

In the following exercises, multiply.

$2\left(x-7\right)$

Q 178.

Page 727

In the following exercises, multiply.

$7\left(y-4\right)$

Q 179.

Page 727

In the following exercises, multiply.

$-3\left(k-4\right)$