Question

I’m confused and I need help with this question?

Answer 1

Answer: C

Begin by dividing 4 on both sides to get
`x^(2)`=81. When a term is squared, that basically means you need to square root the equation. This would equal
`\sqrt{x^(2)`=
`√(81)`. Square rooting cancels out the x^2, leaving it as x=
`√(81)`. This also refers to 9,-9. (Keep in mind that when you're square rooting a number, you should always consider both positive and negative.)

Answer 2

c. x=9 or x=-9

Explanation:

i hope this helps :)