Question

How would I factor this: 13x^2 - 13 = 0

Answer 1

what is a common number found in the two terms 13x^2 and -13?

Answer 2

13?

Answer 3

yes!

Answer 4

factor out of 13.

Answer 5

13 and 1

Answer 6

Well it is \[13x^2-13=0\]\[OR\]\[13 \times x^2 - 13 \times 1 = 0\]\[13(x^2-1)=0\]divide both sides by 13\[\frac{13(x^2-1)}{13}=\frac{0}{13}\]\[x^2-1=0\]\[Do ~~ it\]

Answer 7

x=1

Answer 8

or -1

Answer 9

Yep! x=1 and x=-1