(10+2x)(8+2x)-80=0

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Solution for (10+2x)(8+2x)-80=0 equation:


Simplifying
(10 + 2x)(8 + 2x) + -80 = 0

Multiply (10 + 2x) * (8 + 2x)
(10(8 + 2x) + 2x * (8 + 2x)) + -80 = 0
((8 * 10 + 2x * 10) + 2x * (8 + 2x)) + -80 = 0
((80 + 20x) + 2x * (8 + 2x)) + -80 = 0
(80 + 20x + (8 * 2x + 2x * 2x)) + -80 = 0
(80 + 20x + (16x + 4x2)) + -80 = 0

Combine like terms: 20x + 16x = 36x
(80 + 36x + 4x2) + -80 = 0

Reorder the terms:
80 + -80 + 36x + 4x2 = 0

Combine like terms: 80 + -80 = 0
0 + 36x + 4x2 = 0
36x + 4x2 = 0

Solving
36x + 4x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '4x'.
4x(9 + x) = 0

Ignore the factor 4.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(9 + x)' equal to zero and attempt to solve: Simplifying 9 + x = 0 Solving 9 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + x = 0 + -9 x = 0 + -9 Combine like terms: 0 + -9 = -9 x = -9 Simplifying x = -9

Solution

x = {0, -9}

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