2x^2+20x-43=5

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Solution for 2x^2+20x-43=5 equation:


Simplifying
2x2 + 20x + -43 = 5

Reorder the terms:
-43 + 20x + 2x2 = 5

Solving
-43 + 20x + 2x2 = 5

Solving for variable 'x'.

Reorder the terms:
-43 + -5 + 20x + 2x2 = 5 + -5

Combine like terms: -43 + -5 = -48
-48 + 20x + 2x2 = 5 + -5

Combine like terms: 5 + -5 = 0
-48 + 20x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-24 + 10x + x2) = 0

Factor a trinomial.
2((-12 + -1x)(2 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-12 + -1x)' equal to zero and attempt to solve: Simplifying -12 + -1x = 0 Solving -12 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + -1x = 0 + 12 Combine like terms: -12 + 12 = 0 0 + -1x = 0 + 12 -1x = 0 + 12 Combine like terms: 0 + 12 = 12 -1x = 12 Divide each side by '-1'. x = -12 Simplifying x = -12

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 = {-12, 2}

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