2x^2-x=3x+16

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Solution for 2x^2-x=3x+16 equation:


Simplifying
2x2 + -1x = 3x + 16

Reorder the terms:
-1x + 2x2 = 3x + 16

Reorder the terms:
-1x + 2x2 = 16 + 3x

Solving
-1x + 2x2 = 16 + 3x

Solving for variable 'x'.

Reorder the terms:
-16 + -1x + -3x + 2x2 = 16 + 3x + -16 + -3x

Combine like terms: -1x + -3x = -4x
-16 + -4x + 2x2 = 16 + 3x + -16 + -3x

Reorder the terms:
-16 + -4x + 2x2 = 16 + -16 + 3x + -3x

Combine like terms: 16 + -16 = 0
-16 + -4x + 2x2 = 0 + 3x + -3x
-16 + -4x + 2x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
-16 + -4x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-8 + -2x + x2) = 0

Factor a trinomial.
2((-2 + -1x)(4 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

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

Subproblem 2

Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4

Solution

x = {-2, 4}

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