# How do you solve #x^2-180 = 0 #?

##### 2 Answers

Mar 22, 2016

#### Explanation:

Add

#x^2=180#

Take the square root of both sides. Recall that the positive and negative roots can be taken.

#x=pmsqrt180#

We can simplify

#x=+-6sqrt5#

Mar 22, 2016

#### Explanation:

There are no common factors here so write as

# x^2 = 180 → x = ± sqrt180 # now require to simplify

# sqrt180# considering factors of 180 , one of which is a square.

#rArr sqrt180 = sqrt(36xx5) = sqrt36xxsqrt5 = 6sqrt5# thus :

# x = ± 6sqrt5 #