Question

I need help with these problem please.

X^2+6=15

(x+4)^2=6

can some one help me please.

Answer 1

x^2 + 6 = 15

x^2 = 9
x = +3 or x=-3

x+4 = sqrt 6 or -sqrt 6

x = -4 + sqrt 6
or
x = -4 - sqrt 6