Question

Solve: x-5=√x+7
a) x = 2 or x = 9
b) x = 9
c) No Solution
d) x = 2

The square root is over the x + 7

Answer 1

b) x = 9

Answer 2

square both sides
(x-5)^2=x+7
x^2-10x+25=x+7
x^2-11+18=0
(x+2)(x-9)=0
x=-2, x=9
x=9