8x^2-10x+3(6x^2+3x-3)=0

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Solution for 8x^2-10x+3(6x^2+3x-3)=0 equation:


Simplifying
8x2 + -10x + 3(6x2 + 3x + -3) = 0

Reorder the terms:
8x2 + -10x + 3(-3 + 3x + 6x2) = 0
8x2 + -10x + (-3 * 3 + 3x * 3 + 6x2 * 3) = 0
8x2 + -10x + (-9 + 9x + 18x2) = 0

Reorder the terms:
-9 + -10x + 9x + 8x2 + 18x2 = 0

Combine like terms: -10x + 9x = -1x
-9 + -1x + 8x2 + 18x2 = 0

Combine like terms: 8x2 + 18x2 = 26x2
-9 + -1x + 26x2 = 0

Solving
-9 + -1x + 26x2 = 0

Solving for variable 'x'.

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

Divide each side by '26'.
-0.3461538462 + -0.03846153846x + x2 = 0

Move the constant term to the right:

Add '0.3461538462' to each side of the equation.
-0.3461538462 + -0.03846153846x + 0.3461538462 + x2 = 0 + 0.3461538462

Reorder the terms:
-0.3461538462 + 0.3461538462 + -0.03846153846x + x2 = 0 + 0.3461538462

Combine like terms: -0.3461538462 + 0.3461538462 = 0.0000000000
0.0000000000 + -0.03846153846x + x2 = 0 + 0.3461538462
-0.03846153846x + x2 = 0 + 0.3461538462

Combine like terms: 0 + 0.3461538462 = 0.3461538462
-0.03846153846x + x2 = 0.3461538462

The x term is -0.03846153846x.  Take half its coefficient (-0.01923076923).
Square it (0.0003698224852) and add it to both sides.

Add '0.0003698224852' to each side of the equation.
-0.03846153846x + 0.0003698224852 + x2 = 0.3461538462 + 0.0003698224852

Reorder the terms:
0.0003698224852 + -0.03846153846x + x2 = 0.3461538462 + 0.0003698224852

Combine like terms: 0.3461538462 + 0.0003698224852 = 0.3465236686852
0.0003698224852 + -0.03846153846x + x2 = 0.3465236686852

Factor a perfect square on the left side:
(x + -0.01923076923)(x + -0.01923076923) = 0.3465236686852

Calculate the square root of the right side: 0.58866261

Break this problem into two subproblems by setting 
(x + -0.01923076923) equal to 0.58866261 and -0.58866261.

Subproblem 1

x + -0.01923076923 = 0.58866261 Simplifying x + -0.01923076923 = 0.58866261 Reorder the terms: -0.01923076923 + x = 0.58866261 Solving -0.01923076923 + x = 0.58866261 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.01923076923' to each side of the equation. -0.01923076923 + 0.01923076923 + x = 0.58866261 + 0.01923076923 Combine like terms: -0.01923076923 + 0.01923076923 = 0.00000000000 0.00000000000 + x = 0.58866261 + 0.01923076923 x = 0.58866261 + 0.01923076923 Combine like terms: 0.58866261 + 0.01923076923 = 0.60789337923 x = 0.60789337923 Simplifying x = 0.60789337923

Subproblem 2

x + -0.01923076923 = -0.58866261 Simplifying x + -0.01923076923 = -0.58866261 Reorder the terms: -0.01923076923 + x = -0.58866261 Solving -0.01923076923 + x = -0.58866261 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.01923076923' to each side of the equation. -0.01923076923 + 0.01923076923 + x = -0.58866261 + 0.01923076923 Combine like terms: -0.01923076923 + 0.01923076923 = 0.00000000000 0.00000000000 + x = -0.58866261 + 0.01923076923 x = -0.58866261 + 0.01923076923 Combine like terms: -0.58866261 + 0.01923076923 = -0.56943184077 x = -0.56943184077 Simplifying x = -0.56943184077

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.60789337923, -0.56943184077}

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