Simplifying:
x^{2} + -40 = 60
Reorder the terms:
-40 + x^{2} = 60
Solving:
-40 + x^{2} = 60
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '40' to each side of the equation.
-40 + 40 + x^{2} = 60 + 40
Combine like terms: -40 + 40 = 0
0 + x^{2} = 60 + 40
x^{2} = 60 + 40
Combine like terms: 60 + 40 = 100 x^{2} = 100
Simplifying x^{2} = 100
Take the square root of each side:
x = {-10, 10}
Hope This Helped! :3