Question

Solve for b. (b+12)^2=81 −21 and −3 −69−−√ and 69−−√ −93−−√ and 93−−√ 3 and 21

Answer 1

-3 and -21

Explanation:

it could go either way being -21 and -3. Also, I would explain it but I don't have the time.

Answer 2

Answer: -3 and -21

Explanation:

`(b+12)^(2)=81\\\\√((b+12)^2)=√(81)\\ \\|b+12|=9\\\\b+12=\pm 9\\\\b+12=9\qquad and\qquad b+12=-9\\\\.\quad b=-3\qquad and\qquad \quad b=-21`