Question

Solve the equation using square roots.
x^2-9=0

A. –3, 3

B. –9, 9

C.-(root)3, (root)3

D. no real number solutions

Answer 1

If you factor it you get (x+3)(x-3), so what do you think?

Answer 2

A?

Answer 3

Yup the roots are -3, and 3, you can see if you put -3 you get (-3+3) =0, and (3-3) = 0

Answer 4

ok thank you