x^2-9x+20=2x-4

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Solution for x^2-9x+20=2x-4 equation:


Simplifying
x2 + -9x + 20 = 2x + -4

Reorder the terms:
20 + -9x + x2 = 2x + -4

Reorder the terms:
20 + -9x + x2 = -4 + 2x

Solving
20 + -9x + x2 = -4 + 2x

Solving for variable 'x'.

Reorder the terms:
20 + 4 + -9x + -2x + x2 = -4 + 2x + 4 + -2x

Combine like terms: 20 + 4 = 24
24 + -9x + -2x + x2 = -4 + 2x + 4 + -2x

Combine like terms: -9x + -2x = -11x
24 + -11x + x2 = -4 + 2x + 4 + -2x

Reorder the terms:
24 + -11x + x2 = -4 + 4 + 2x + -2x

Combine like terms: -4 + 4 = 0
24 + -11x + x2 = 0 + 2x + -2x
24 + -11x + x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
24 + -11x + x2 = 0

Factor a trinomial.
(3 + -1x)(8 + -1x) = 0

Subproblem 1

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Subproblem 2

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

Solution

x = {3, 8}

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