159k views
3 votes
X^2 − 15 = 1 please help

1 Answer

1 vote

Answer:

x^2-15=1

x^2=16

4 x 4 = 16

THerefore...

x=4

Depending on how many choices there are -4 is also correct.

Any number squared is a positive.

x=4, x=-4

Explanation:

User Kenton Newby
by
5.5k points