7x^2-10+6x^2-3x=180

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Solution for 7x^2-10+6x^2-3x=180 equation:


Simplifying
7x2 + -10 + 6x2 + -3x = 180

Reorder the terms:
-10 + -3x + 7x2 + 6x2 = 180

Combine like terms: 7x2 + 6x2 = 13x2
-10 + -3x + 13x2 = 180

Solving
-10 + -3x + 13x2 = 180

Solving for variable 'x'.

Reorder the terms:
-10 + -180 + -3x + 13x2 = 180 + -180

Combine like terms: -10 + -180 = -190
-190 + -3x + 13x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-190 + -3x + 13x2 = 0

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

Divide each side by '13'.
-14.61538462 + -0.2307692308x + x2 = 0

Move the constant term to the right:

Add '14.61538462' to each side of the equation.
-14.61538462 + -0.2307692308x + 14.61538462 + x2 = 0 + 14.61538462

Reorder the terms:
-14.61538462 + 14.61538462 + -0.2307692308x + x2 = 0 + 14.61538462

Combine like terms: -14.61538462 + 14.61538462 = 0.00000000
0.00000000 + -0.2307692308x + x2 = 0 + 14.61538462
-0.2307692308x + x2 = 0 + 14.61538462

Combine like terms: 0 + 14.61538462 = 14.61538462
-0.2307692308x + x2 = 14.61538462

The x term is -0.2307692308x.  Take half its coefficient (-0.1153846154).
Square it (0.01331360947) and add it to both sides.

Add '0.01331360947' to each side of the equation.
-0.2307692308x + 0.01331360947 + x2 = 14.61538462 + 0.01331360947

Reorder the terms:
0.01331360947 + -0.2307692308x + x2 = 14.61538462 + 0.01331360947

Combine like terms: 14.61538462 + 0.01331360947 = 14.62869822947
0.01331360947 + -0.2307692308x + x2 = 14.62869822947

Factor a perfect square on the left side:
(x + -0.1153846154)(x + -0.1153846154) = 14.62869822947

Calculate the square root of the right side: 3.824748126

Break this problem into two subproblems by setting 
(x + -0.1153846154) equal to 3.824748126 and -3.824748126.

Subproblem 1

x + -0.1153846154 = 3.824748126 Simplifying x + -0.1153846154 = 3.824748126 Reorder the terms: -0.1153846154 + x = 3.824748126 Solving -0.1153846154 + x = 3.824748126 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1153846154' to each side of the equation. -0.1153846154 + 0.1153846154 + x = 3.824748126 + 0.1153846154 Combine like terms: -0.1153846154 + 0.1153846154 = 0.0000000000 0.0000000000 + x = 3.824748126 + 0.1153846154 x = 3.824748126 + 0.1153846154 Combine like terms: 3.824748126 + 0.1153846154 = 3.9401327414 x = 3.9401327414 Simplifying x = 3.9401327414

Subproblem 2

x + -0.1153846154 = -3.824748126 Simplifying x + -0.1153846154 = -3.824748126 Reorder the terms: -0.1153846154 + x = -3.824748126 Solving -0.1153846154 + x = -3.824748126 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1153846154' to each side of the equation. -0.1153846154 + 0.1153846154 + x = -3.824748126 + 0.1153846154 Combine like terms: -0.1153846154 + 0.1153846154 = 0.0000000000 0.0000000000 + x = -3.824748126 + 0.1153846154 x = -3.824748126 + 0.1153846154 Combine like terms: -3.824748126 + 0.1153846154 = -3.7093635106 x = -3.7093635106 Simplifying x = -3.7093635106

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.9401327414, -3.7093635106}

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