x^2+2x-12=3x^2+8x-5

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Solution for x^2+2x-12=3x^2+8x-5 equation:


Simplifying
x2 + 2x + -12 = 3x2 + 8x + -5

Reorder the terms:
-12 + 2x + x2 = 3x2 + 8x + -5

Reorder the terms:
-12 + 2x + x2 = -5 + 8x + 3x2

Solving
-12 + 2x + x2 = -5 + 8x + 3x2

Solving for variable 'x'.

Reorder the terms:
-12 + 5 + 2x + -8x + x2 + -3x2 = -5 + 8x + 3x2 + 5 + -8x + -3x2

Combine like terms: -12 + 5 = -7
-7 + 2x + -8x + x2 + -3x2 = -5 + 8x + 3x2 + 5 + -8x + -3x2

Combine like terms: 2x + -8x = -6x
-7 + -6x + x2 + -3x2 = -5 + 8x + 3x2 + 5 + -8x + -3x2

Combine like terms: x2 + -3x2 = -2x2
-7 + -6x + -2x2 = -5 + 8x + 3x2 + 5 + -8x + -3x2

Reorder the terms:
-7 + -6x + -2x2 = -5 + 5 + 8x + -8x + 3x2 + -3x2

Combine like terms: -5 + 5 = 0
-7 + -6x + -2x2 = 0 + 8x + -8x + 3x2 + -3x2
-7 + -6x + -2x2 = 8x + -8x + 3x2 + -3x2

Combine like terms: 8x + -8x = 0
-7 + -6x + -2x2 = 0 + 3x2 + -3x2
-7 + -6x + -2x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
-7 + -6x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(7 + 6x + 2x2) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(7 + 6x + 2x2)' equal to zero and attempt to solve: Simplifying 7 + 6x + 2x2 = 0 Solving 7 + 6x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 3.5 + 3x + x2 = 0 Move the constant term to the right: Add '-3.5' to each side of the equation. 3.5 + 3x + -3.5 + x2 = 0 + -3.5 Reorder the terms: 3.5 + -3.5 + 3x + x2 = 0 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + 3x + x2 = 0 + -3.5 3x + x2 = 0 + -3.5 Combine like terms: 0 + -3.5 = -3.5 3x + x2 = -3.5 The x term is 3x. Take half its coefficient (1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. 3x + 2.25 + x2 = -3.5 + 2.25 Reorder the terms: 2.25 + 3x + x2 = -3.5 + 2.25 Combine like terms: -3.5 + 2.25 = -1.25 2.25 + 3x + x2 = -1.25 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = -1.25 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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