Question

What are the solutions to the equation x2 + 6 = 87?

A.
–6 and 6

B.
–10 and 10

C.
–9 and 9

D.
The equation has no solutions.


im thinking its A

Answer 1

Simplifying
x2 + 6 = 87

Reorder the terms:
6 + x2 = 87

Solving
6 + x2 = 87

Move all terms containing x to the left, all other terms to the right.

Add '-6' to each side of the equation.
6 + -6 + x2 = 87 + -6

Combine like terms: 6 + -6 = 0
0 + x2 = 87 + -6
x2 = 87 + -6

Combine like terms: 87 + -6 = 81
x2 = 81

Simplifying
x2 = 81

Take the square root of each side:
x = {-9, 9}

Answer 2

So therefore your answer would be C!

Answer 3

o dang i was way off :O

Answer 4

Haha, it's okay we all make mistakes!

Answer 5

Glad I could help! See ya!