Question

can someone tell me if i am correct? sqrt(x+8)=-4 i got x=8

Answer 1

To remove the sqrt, you square both sides. x+8=16, as -4*-4 = 16.
x+8=16
-8 both sides
x=8

Answer 2

that's what i thought, but the system is telling me i am wrong :/

Answer 3

Ohh, I see. If you replace 8 as x, then sqrt(16)=-4, and sqrt16= positive 4.

Answer 4

It's the sign change from the squaring.

Answer 5

lol, i think i found a system mistake, says the answer is B rofl

Answer 6

b is no solution