4x^2+12x+9-16=2x-1

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Solution for 4x^2+12x+9-16=2x-1 equation:


Simplifying
4x2 + 12x + 9 + -16 = 2x + -1

Reorder the terms:
9 + -16 + 12x + 4x2 = 2x + -1

Combine like terms: 9 + -16 = -7
-7 + 12x + 4x2 = 2x + -1

Reorder the terms:
-7 + 12x + 4x2 = -1 + 2x

Solving
-7 + 12x + 4x2 = -1 + 2x

Solving for variable 'x'.

Reorder the terms:
-7 + 1 + 12x + -2x + 4x2 = -1 + 2x + 1 + -2x

Combine like terms: -7 + 1 = -6
-6 + 12x + -2x + 4x2 = -1 + 2x + 1 + -2x

Combine like terms: 12x + -2x = 10x
-6 + 10x + 4x2 = -1 + 2x + 1 + -2x

Reorder the terms:
-6 + 10x + 4x2 = -1 + 1 + 2x + -2x

Combine like terms: -1 + 1 = 0
-6 + 10x + 4x2 = 0 + 2x + -2x
-6 + 10x + 4x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
-6 + 10x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-3 + 5x + 2x2) = 0

Factor a trinomial.
2((-3 + -1x)(1 + -2x)) = 0

Ignore the factor 2.

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 '(1 + -2x)' equal to zero and attempt to solve: Simplifying 1 + -2x = 0 Solving 1 + -2x = 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 + -2x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2x = 0 + -1 -2x = 0 + -1 Combine like terms: 0 + -1 = -1 -2x = -1 Divide each side by '-2'. x = 0.5 Simplifying x = 0.5

Solution

x = {-3, 0.5}

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