12x-27=x^2-4x-12

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Solution for 12x-27=x^2-4x-12 equation:


Simplifying
12x + -27 = x2 + -4x + -12

Reorder the terms:
-27 + 12x = x2 + -4x + -12

Reorder the terms:
-27 + 12x = -12 + -4x + x2

Solving
-27 + 12x = -12 + -4x + x2

Solving for variable 'x'.

Reorder the terms:
-27 + 12 + 12x + 4x + -1x2 = -12 + -4x + x2 + 12 + 4x + -1x2

Combine like terms: -27 + 12 = -15
-15 + 12x + 4x + -1x2 = -12 + -4x + x2 + 12 + 4x + -1x2

Combine like terms: 12x + 4x = 16x
-15 + 16x + -1x2 = -12 + -4x + x2 + 12 + 4x + -1x2

Reorder the terms:
-15 + 16x + -1x2 = -12 + 12 + -4x + 4x + x2 + -1x2

Combine like terms: -12 + 12 = 0
-15 + 16x + -1x2 = 0 + -4x + 4x + x2 + -1x2
-15 + 16x + -1x2 = -4x + 4x + x2 + -1x2

Combine like terms: -4x + 4x = 0
-15 + 16x + -1x2 = 0 + x2 + -1x2
-15 + 16x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-15 + 16x + -1x2 = 0

Factor a trinomial.
(-15 + x)(1 + -1x) = 0

Subproblem 1

Set the factor '(-15 + x)' equal to zero and attempt to solve: Simplifying -15 + x = 0 Solving -15 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + x = 0 + 15 Combine like terms: -15 + 15 = 0 0 + x = 0 + 15 x = 0 + 15 Combine like terms: 0 + 15 = 15 x = 15 Simplifying x = 15

Subproblem 2

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

Solution

x = {15, 1}

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