9x^2+12x-3=(3x-1)(1x+1)

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Solution for 9x^2+12x-3=(3x-1)(1x+1) equation:


Simplifying
9x2 + 12x + -3 = (3x + -1)(1x + 1)

Reorder the terms:
-3 + 12x + 9x2 = (3x + -1)(1x + 1)

Reorder the terms:
-3 + 12x + 9x2 = (-1 + 3x)(1x + 1)

Reorder the terms:
-3 + 12x + 9x2 = (-1 + 3x)(1 + 1x)

Multiply (-1 + 3x) * (1 + 1x)
-3 + 12x + 9x2 = (-1(1 + 1x) + 3x * (1 + 1x))
-3 + 12x + 9x2 = ((1 * -1 + 1x * -1) + 3x * (1 + 1x))
-3 + 12x + 9x2 = ((-1 + -1x) + 3x * (1 + 1x))
-3 + 12x + 9x2 = (-1 + -1x + (1 * 3x + 1x * 3x))
-3 + 12x + 9x2 = (-1 + -1x + (3x + 3x2))

Combine like terms: -1x + 3x = 2x
-3 + 12x + 9x2 = (-1 + 2x + 3x2)

Solving
-3 + 12x + 9x2 = -1 + 2x + 3x2

Solving for variable 'x'.

Reorder the terms:
-3 + 1 + 12x + -2x + 9x2 + -3x2 = -1 + 2x + 3x2 + 1 + -2x + -3x2

Combine like terms: -3 + 1 = -2
-2 + 12x + -2x + 9x2 + -3x2 = -1 + 2x + 3x2 + 1 + -2x + -3x2

Combine like terms: 12x + -2x = 10x
-2 + 10x + 9x2 + -3x2 = -1 + 2x + 3x2 + 1 + -2x + -3x2

Combine like terms: 9x2 + -3x2 = 6x2
-2 + 10x + 6x2 = -1 + 2x + 3x2 + 1 + -2x + -3x2

Reorder the terms:
-2 + 10x + 6x2 = -1 + 1 + 2x + -2x + 3x2 + -3x2

Combine like terms: -1 + 1 = 0
-2 + 10x + 6x2 = 0 + 2x + -2x + 3x2 + -3x2
-2 + 10x + 6x2 = 2x + -2x + 3x2 + -3x2

Combine like terms: 2x + -2x = 0
-2 + 10x + 6x2 = 0 + 3x2 + -3x2
-2 + 10x + 6x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
-2 + 10x + 6x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-1 + 5x + 3x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-1 + 5x + 3x2)' equal to zero and attempt to solve: Simplifying -1 + 5x + 3x2 = 0 Solving -1 + 5x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -0.3333333333 + 1.666666667x + x2 = 0 Move the constant term to the right: Add '0.3333333333' to each side of the equation. -0.3333333333 + 1.666666667x + 0.3333333333 + x2 = 0 + 0.3333333333 Reorder the terms: -0.3333333333 + 0.3333333333 + 1.666666667x + x2 = 0 + 0.3333333333 Combine like terms: -0.3333333333 + 0.3333333333 = 0.0000000000 0.0000000000 + 1.666666667x + x2 = 0 + 0.3333333333 1.666666667x + x2 = 0 + 0.3333333333 Combine like terms: 0 + 0.3333333333 = 0.3333333333 1.666666667x + x2 = 0.3333333333 The x term is 1.666666667x. Take half its coefficient (0.8333333335). Square it (0.6944444447) and add it to both sides. Add '0.6944444447' to each side of the equation. 1.666666667x + 0.6944444447 + x2 = 0.3333333333 + 0.6944444447 Reorder the terms: 0.6944444447 + 1.666666667x + x2 = 0.3333333333 + 0.6944444447 Combine like terms: 0.3333333333 + 0.6944444447 = 1.027777778 0.6944444447 + 1.666666667x + x2 = 1.027777778 Factor a perfect square on the left side: (x + 0.8333333335)(x + 0.8333333335) = 1.027777778 Calculate the square root of the right side: 1.013793755 Break this problem into two subproblems by setting (x + 0.8333333335) equal to 1.013793755 and -1.013793755.

Subproblem 1

x + 0.8333333335 = 1.013793755 Simplifying x + 0.8333333335 = 1.013793755 Reorder the terms: 0.8333333335 + x = 1.013793755 Solving 0.8333333335 + x = 1.013793755 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8333333335' to each side of the equation. 0.8333333335 + -0.8333333335 + x = 1.013793755 + -0.8333333335 Combine like terms: 0.8333333335 + -0.8333333335 = 0.0000000000 0.0000000000 + x = 1.013793755 + -0.8333333335 x = 1.013793755 + -0.8333333335 Combine like terms: 1.013793755 + -0.8333333335 = 0.1804604215 x = 0.1804604215 Simplifying x = 0.1804604215

Subproblem 2

x + 0.8333333335 = -1.013793755 Simplifying x + 0.8333333335 = -1.013793755 Reorder the terms: 0.8333333335 + x = -1.013793755 Solving 0.8333333335 + x = -1.013793755 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8333333335' to each side of the equation. 0.8333333335 + -0.8333333335 + x = -1.013793755 + -0.8333333335 Combine like terms: 0.8333333335 + -0.8333333335 = 0.0000000000 0.0000000000 + x = -1.013793755 + -0.8333333335 x = -1.013793755 + -0.8333333335 Combine like terms: -1.013793755 + -0.8333333335 = -1.8471270885 x = -1.8471270885 Simplifying x = -1.8471270885

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.1804604215, -1.8471270885}

Solution

x = {0.1804604215, -1.8471270885}

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