66=2x^2-12x+82

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Solution for 66=2x^2-12x+82 equation:


Simplifying
66 = 2x2 + -12x + 82

Reorder the terms:
66 = 82 + -12x + 2x2

Solving
66 = 82 + -12x + 2x2

Solving for variable 'x'.

Combine like terms: 66 + -82 = -16
-16 + 12x + -2x2 = 82 + -12x + 2x2 + -82 + 12x + -2x2

Reorder the terms:
-16 + 12x + -2x2 = 82 + -82 + -12x + 12x + 2x2 + -2x2

Combine like terms: 82 + -82 = 0
-16 + 12x + -2x2 = 0 + -12x + 12x + 2x2 + -2x2
-16 + 12x + -2x2 = -12x + 12x + 2x2 + -2x2

Combine like terms: -12x + 12x = 0
-16 + 12x + -2x2 = 0 + 2x2 + -2x2
-16 + 12x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-16 + 12x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-8 + 6x + -1x2) = 0

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

Ignore the factor 2.

Subproblem 1

Set the factor '(-4 + x)' equal to zero and attempt to solve: Simplifying -4 + x = 0 Solving -4 + x = 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 + x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + x = 0 + 4 x = 0 + 4 Combine like terms: 0 + 4 = 4 x = 4 Simplifying x = 4

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 = {4, 2}

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