Question

Solve by taking square roots: x^2 - 40 = 9

Answer 1

`x^(2) -40= 9`


`x^(2) = 49`


`\sqrt{ x^(2) } = √(49)`

x = +7 or -7

Answer 2

To solve for x^2 - 40 = 9, take the square roots of both sides and solve.
The answer is x = 7, -7.