# How do you solve #8-8a^2=-792#?

##### 2 Answers

Aug 15, 2016

#### Answer:

#### Explanation:

Aug 15, 2016

#### Answer:

#### Explanation:

What we want to do here is isolate the

#-8a^2# term on the left side of the equation while having the numeric value on the right.To do this subtract 8 from both sides.

#cancel(8)cancel(-8)-8a^2=-792-8#

#rArr-8a^2=-800# now divide both sides by -8

#(cancel(-8)^1 a^2)/cancel(-8)=(cancel(-800)^(100))/cancel(-8)^1rArra^2=100# now take the 'square root' of both sides

#sqrt(a^2)=±sqrt100rArra=±10#