-6x^2-8+14+7x^2-15x=

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Solution for -6x^2-8+14+7x^2-15x= equation:


Simplifying
-6x2 + -8 + 14 + 7x2 + -15x = 0

Reorder the terms:
-8 + 14 + -15x + -6x2 + 7x2 = 0

Combine like terms: -8 + 14 = 6
6 + -15x + -6x2 + 7x2 = 0

Combine like terms: -6x2 + 7x2 = 1x2
6 + -15x + 1x2 = 0

Solving
6 + -15x + 1x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-6' to each side of the equation.
6 + -15x + -6 + x2 = 0 + -6

Reorder the terms:
6 + -6 + -15x + x2 = 0 + -6

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

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

The x term is -15x.  Take half its coefficient (-7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
-15x + 56.25 + x2 = -6 + 56.25

Reorder the terms:
56.25 + -15x + x2 = -6 + 56.25

Combine like terms: -6 + 56.25 = 50.25
56.25 + -15x + x2 = 50.25

Factor a perfect square on the left side:
(x + -7.5)(x + -7.5) = 50.25

Calculate the square root of the right side: 7.088723439

Break this problem into two subproblems by setting 
(x + -7.5) equal to 7.088723439 and -7.088723439.

Subproblem 1

x + -7.5 = 7.088723439 Simplifying x + -7.5 = 7.088723439 Reorder the terms: -7.5 + x = 7.088723439 Solving -7.5 + x = 7.088723439 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + x = 7.088723439 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = 7.088723439 + 7.5 x = 7.088723439 + 7.5 Combine like terms: 7.088723439 + 7.5 = 14.588723439 x = 14.588723439 Simplifying x = 14.588723439

Subproblem 2

x + -7.5 = -7.088723439 Simplifying x + -7.5 = -7.088723439 Reorder the terms: -7.5 + x = -7.088723439 Solving -7.5 + x = -7.088723439 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + x = -7.088723439 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = -7.088723439 + 7.5 x = -7.088723439 + 7.5 Combine like terms: -7.088723439 + 7.5 = 0.411276561 x = 0.411276561 Simplifying x = 0.411276561

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.588723439, 0.411276561}

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