20+2x=x^2-4x+4

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Solution for 20+2x=x^2-4x+4 equation:


Simplifying
20 + 2x = x2 + -4x + 4

Reorder the terms:
20 + 2x = 4 + -4x + x2

Solving
20 + 2x = 4 + -4x + x2

Solving for variable 'x'.

Reorder the terms:
20 + -4 + 2x + 4x + -1x2 = 4 + -4x + x2 + -4 + 4x + -1x2

Combine like terms: 20 + -4 = 16
16 + 2x + 4x + -1x2 = 4 + -4x + x2 + -4 + 4x + -1x2

Combine like terms: 2x + 4x = 6x
16 + 6x + -1x2 = 4 + -4x + x2 + -4 + 4x + -1x2

Reorder the terms:
16 + 6x + -1x2 = 4 + -4 + -4x + 4x + x2 + -1x2

Combine like terms: 4 + -4 = 0
16 + 6x + -1x2 = 0 + -4x + 4x + x2 + -1x2
16 + 6x + -1x2 = -4x + 4x + x2 + -1x2

Combine like terms: -4x + 4x = 0
16 + 6x + -1x2 = 0 + x2 + -1x2
16 + 6x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
16 + 6x + -1x2 = 0

Factor a trinomial.
(8 + -1x)(2 + x) = 0

Subproblem 1

Set the factor '(8 + -1x)' equal to zero and attempt to solve: Simplifying 8 + -1x = 0 Solving 8 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1x = 0 + -8 -1x = 0 + -8 Combine like terms: 0 + -8 = -8 -1x = -8 Divide each side by '-1'. x = 8 Simplifying x = 8

Subproblem 2

Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 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 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2

Solution

x = {8, -2}

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