(x-5)(x+5)=56

Solution for (x-5)(x+5)=56 equation:

Simplifying
(x + -5)(x + 5) = 56

Reorder the terms:
(-5 + x)(x + 5) = 56

Reorder the terms:
(-5 + x)(5 + x) = 56

Multiply (-5 + x) * (5 + x)
(-5(5 + x) + x(5 + x)) = 56
((5 * -5 + x * -5) + x(5 + x)) = 56
((-25 + -5x) + x(5 + x)) = 56
(-25 + -5x + (5 * x + x * x)) = 56
(-25 + -5x + (5x + x2)) = 56

Combine like terms: -5x + 5x = 0
(-25 + 0 + x2) = 56
(-25 + x2) = 56

Solving
-25 + x2 = 56

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '25' to each side of the equation.
-25 + 25 + x2 = 56 + 25

Combine like terms: -25 + 25 = 0
0 + x2 = 56 + 25
x2 = 56 + 25

Combine like terms: 56 + 25 = 81
x2 = 81

Simplifying
x2 = 81

Take the square root of each side:
x = {-9, 9}