# How do you solve #-7n^2=-448#?

##### 2 Answers

Sep 1, 2016

#### Explanation:

Divide both sides by -7 so as to isolate the

#n^2# term.

#(cancel(-7)^1 n^2)/cancel(-7)^1=(cancel(-448)^(64))/cancel(-7)^1rArrn^2=64# now take the square root of both sides

#sqrt(n^2)=+-sqrt64rArrn=+-8#

Sep 1, 2016

#### Explanation:

This is a quadratic equation, it can be solved by factorising.

Either factor can be equal to 0.

If

If