Solve: - 5√x = - 15

a: x=-9

b: x = - 7

c: x=9

d: x=7

Question

Casey Phillips

Mathematics

15 October, 09:49

Solve: - 5√x = - 15

a: x=-9

b: x = - 7

c: x=9

d: x=7

+3

Answers (2)

Know the Answer?

Craig Zamora · Answer 1

The answer is C: x = 9

Cannon Galloway · Answer 2

Divide both sides by - 5

Sqrt (x) = 3

We want to isolate x to solve for it. The opposite of a square root is a square, so square both sides.

x = 9

It can't be - 9 because the square root of negative numbers are not real numbers.

Solve: - 5√x = - 15a: x=-9b: x = - 7c: x=9d: x=7

Solve: - 5√x = - 15

a: x=-9

b: x = - 7

c: x=9

d: x=7