-8x^2-10x-7x^2+5+14x=

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Solution for -8x^2-10x-7x^2+5+14x= equation:


Simplifying
-8x2 + -10x + -7x2 + 5 + 14x = 0

Reorder the terms:
5 + -10x + 14x + -8x2 + -7x2 = 0

Combine like terms: -10x + 14x = 4x
5 + 4x + -8x2 + -7x2 = 0

Combine like terms: -8x2 + -7x2 = -15x2
5 + 4x + -15x2 = 0

Solving
5 + 4x + -15x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-15 the coefficient of the squared term: 

Divide each side by '-15'.
-0.3333333333 + -0.2666666667x + x2 = 0

Move the constant term to the right:

Add '0.3333333333' to each side of the equation.
-0.3333333333 + -0.2666666667x + 0.3333333333 + x2 = 0 + 0.3333333333

Reorder the terms:
-0.3333333333 + 0.3333333333 + -0.2666666667x + x2 = 0 + 0.3333333333

Combine like terms: -0.3333333333 + 0.3333333333 = 0.0000000000
0.0000000000 + -0.2666666667x + x2 = 0 + 0.3333333333
-0.2666666667x + x2 = 0 + 0.3333333333

Combine like terms: 0 + 0.3333333333 = 0.3333333333
-0.2666666667x + x2 = 0.3333333333

The x term is -0.2666666667x.  Take half its coefficient (-0.1333333334).
Square it (0.01777777780) and add it to both sides.

Add '0.01777777780' to each side of the equation.
-0.2666666667x + 0.01777777780 + x2 = 0.3333333333 + 0.01777777780

Reorder the terms:
0.01777777780 + -0.2666666667x + x2 = 0.3333333333 + 0.01777777780

Combine like terms: 0.3333333333 + 0.01777777780 = 0.3511111111
0.01777777780 + -0.2666666667x + x2 = 0.3511111111

Factor a perfect square on the left side:
(x + -0.1333333334)(x + -0.1333333334) = 0.3511111111

Calculate the square root of the right side: 0.592546294

Break this problem into two subproblems by setting 
(x + -0.1333333334) equal to 0.592546294 and -0.592546294.

Subproblem 1

x + -0.1333333334 = 0.592546294 Simplifying x + -0.1333333334 = 0.592546294 Reorder the terms: -0.1333333334 + x = 0.592546294 Solving -0.1333333334 + x = 0.592546294 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1333333334' to each side of the equation. -0.1333333334 + 0.1333333334 + x = 0.592546294 + 0.1333333334 Combine like terms: -0.1333333334 + 0.1333333334 = 0.0000000000 0.0000000000 + x = 0.592546294 + 0.1333333334 x = 0.592546294 + 0.1333333334 Combine like terms: 0.592546294 + 0.1333333334 = 0.7258796274 x = 0.7258796274 Simplifying x = 0.7258796274

Subproblem 2

x + -0.1333333334 = -0.592546294 Simplifying x + -0.1333333334 = -0.592546294 Reorder the terms: -0.1333333334 + x = -0.592546294 Solving -0.1333333334 + x = -0.592546294 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1333333334' to each side of the equation. -0.1333333334 + 0.1333333334 + x = -0.592546294 + 0.1333333334 Combine like terms: -0.1333333334 + 0.1333333334 = 0.0000000000 0.0000000000 + x = -0.592546294 + 0.1333333334 x = -0.592546294 + 0.1333333334 Combine like terms: -0.592546294 + 0.1333333334 = -0.4592129606 x = -0.4592129606 Simplifying x = -0.4592129606

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.7258796274, -0.4592129606}

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