(x+20)(x-2)=

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Solution for (x+20)(x-2)= equation:


Simplifying
(x + 20)(x + -2) = 0

Reorder the terms:
(20 + x)(x + -2) = 0

Reorder the terms:
(20 + x)(-2 + x) = 0

Multiply (20 + x) * (-2 + x)
(20(-2 + x) + x(-2 + x)) = 0
((-2 * 20 + x * 20) + x(-2 + x)) = 0
((-40 + 20x) + x(-2 + x)) = 0
(-40 + 20x + (-2 * x + x * x)) = 0
(-40 + 20x + (-2x + x2)) = 0

Combine like terms: 20x + -2x = 18x
(-40 + 18x + x2) = 0

Solving
-40 + 18x + x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-20 + -1x)(2 + -1x) = 0

Subproblem 1

Set the factor '(-20 + -1x)' equal to zero and attempt to solve: Simplifying -20 + -1x = 0 Solving -20 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '20' to each side of the equation. -20 + 20 + -1x = 0 + 20 Combine like terms: -20 + 20 = 0 0 + -1x = 0 + 20 -1x = 0 + 20 Combine like terms: 0 + 20 = 20 -1x = 20 Divide each side by '-1'. x = -20 Simplifying x = -20

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {-20, 2}

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