-(3x-2)*(5x+3)-x^2=0

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Solution for -(3x-2)*(5x+3)-x^2=0 equation:


Simplifying
-1(3x + -2)(5x + 3) + -1x2 = 0

Reorder the terms:
-1(-2 + 3x)(5x + 3) + -1x2 = 0

Reorder the terms:
-1(-2 + 3x)(3 + 5x) + -1x2 = 0

Multiply (-2 + 3x) * (3 + 5x)
-1(-2(3 + 5x) + 3x * (3 + 5x)) + -1x2 = 0
-1((3 * -2 + 5x * -2) + 3x * (3 + 5x)) + -1x2 = 0
-1((-6 + -10x) + 3x * (3 + 5x)) + -1x2 = 0
-1(-6 + -10x + (3 * 3x + 5x * 3x)) + -1x2 = 0
-1(-6 + -10x + (9x + 15x2)) + -1x2 = 0

Combine like terms: -10x + 9x = -1x
-1(-6 + -1x + 15x2) + -1x2 = 0
(-6 * -1 + -1x * -1 + 15x2 * -1) + -1x2 = 0
(6 + 1x + -15x2) + -1x2 = 0

Combine like terms: -15x2 + -1x2 = -16x2
6 + 1x + -16x2 = 0

Solving
6 + 1x + -16x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
-0.375 + -0.0625x + x2 = 0

Move the constant term to the right:

Add '0.375' to each side of the equation.
-0.375 + -0.0625x + 0.375 + x2 = 0 + 0.375

Reorder the terms:
-0.375 + 0.375 + -0.0625x + x2 = 0 + 0.375

Combine like terms: -0.375 + 0.375 = 0.000
0.000 + -0.0625x + x2 = 0 + 0.375
-0.0625x + x2 = 0 + 0.375

Combine like terms: 0 + 0.375 = 0.375
-0.0625x + x2 = 0.375

The x term is -0.0625x.  Take half its coefficient (-0.03125).
Square it (0.0009765625) and add it to both sides.

Add '0.0009765625' to each side of the equation.
-0.0625x + 0.0009765625 + x2 = 0.375 + 0.0009765625

Reorder the terms:
0.0009765625 + -0.0625x + x2 = 0.375 + 0.0009765625

Combine like terms: 0.375 + 0.0009765625 = 0.3759765625
0.0009765625 + -0.0625x + x2 = 0.3759765625

Factor a perfect square on the left side:
(x + -0.03125)(x + -0.03125) = 0.3759765625

Calculate the square root of the right side: 0.613169277

Break this problem into two subproblems by setting 
(x + -0.03125) equal to 0.613169277 and -0.613169277.

Subproblem 1

x + -0.03125 = 0.613169277 Simplifying x + -0.03125 = 0.613169277 Reorder the terms: -0.03125 + x = 0.613169277 Solving -0.03125 + x = 0.613169277 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.03125' to each side of the equation. -0.03125 + 0.03125 + x = 0.613169277 + 0.03125 Combine like terms: -0.03125 + 0.03125 = 0.00000 0.00000 + x = 0.613169277 + 0.03125 x = 0.613169277 + 0.03125 Combine like terms: 0.613169277 + 0.03125 = 0.644419277 x = 0.644419277 Simplifying x = 0.644419277

Subproblem 2

x + -0.03125 = -0.613169277 Simplifying x + -0.03125 = -0.613169277 Reorder the terms: -0.03125 + x = -0.613169277 Solving -0.03125 + x = -0.613169277 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.03125' to each side of the equation. -0.03125 + 0.03125 + x = -0.613169277 + 0.03125 Combine like terms: -0.03125 + 0.03125 = 0.00000 0.00000 + x = -0.613169277 + 0.03125 x = -0.613169277 + 0.03125 Combine like terms: -0.613169277 + 0.03125 = -0.581919277 x = -0.581919277 Simplifying x = -0.581919277

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.644419277, -0.581919277}

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