Question

simplify (7b)^-2

Answer 1

What do you do when you have a negative exponent?

Answer 2

\[1/7b^2\]

Answer 3

Move it to the denominator..

Answer 4

nothingbutnx is correct, now remember you must square the 7 also.

Answer 5

so we have a negative exponent.... negative exponents aren't allowed in exponent land.
Therefore, you must write 1 / your exponent problem
so

Answer 6

forgot the parentheses, sorry

Answer 7

Now (7b)^2 is like writing 7 twice and b twice