Question

Solve: x+3=sqrtx^2+15 x=?

Answer 1

sqrt(x^2+15) or sqrt x^2

Answer 2

is important to know

Answer 3

Just square both sides

Answer 4

sqrt(x^2+15)

Answer 5

ok
than square both sides to remove the square root

Answer 6

(x+3)^2 = x^2 + 15
x^2 + 6x + 9 = x^2 + 15
6x = -9 + 15
6x = 6
x = 1

Answer 7

thanks