Answer:
ab(b−1)
Step-by-step explanation:
Factor ab out of ab ^2 − ab
Answer:
9
√
2
Step-by-step explanation:
1. Rewrite 162 as
⋅2
2. factor 81 out of 162

3. Rewrite 81 as 

4. Pull the terms from under the radical
![\sqrt[9]{2}](https://tex.z-dn.net/?f=%5Csqrt%5B9%5D%7B2%7D)
I hope this helps :)
Pi*r^2
3.14*7000^2
153,860,000
The first option,
both have to be negative, because they were originally both part of the one fraction, which was all negative.