Question

How do you solve x^2-16=0

Answer 1

kamsned hardy jafru 1234

Answer 2

Answer:

x = 4, x = -4.

Step-by-step explanation:

We can start by adding 16 to both sides:

x^2 - 16 (+16) = 0 (+16).

This gives us x^2 = 16.

$\sqrt{16}$ = 4 and -4, so that is our answer.

Check:

4^2 -16 = 0.

4^2 = 16:

16 -16 = 0.

OR:

(-4)^2 - 16 = 0.

(-4)^2 = 16.

16 - 16 = 0.

So, our answer could be 4 or -4.