9x*9x-10=8x*8x-6x

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Solution for 9x*9x-10=8x*8x-6x equation:


Simplifying
9x * 9x + -10 = 8x * 8x + -6x

Reorder the terms for easier multiplication:
9 * 9x * x + -10 = 8x * 8x + -6x

Multiply 9 * 9
81x * x + -10 = 8x * 8x + -6x

Multiply x * x
81x2 + -10 = 8x * 8x + -6x

Reorder the terms:
-10 + 81x2 = 8x * 8x + -6x

Reorder the terms for easier multiplication:
-10 + 81x2 = 8 * 8x * x + -6x

Multiply 8 * 8
-10 + 81x2 = 64x * x + -6x

Multiply x * x
-10 + 81x2 = 64x2 + -6x

Reorder the terms:
-10 + 81x2 = -6x + 64x2

Solving
-10 + 81x2 = -6x + 64x2

Solving for variable 'x'.

Reorder the terms:
-10 + 6x + 81x2 + -64x2 = -6x + 64x2 + 6x + -64x2

Combine like terms: 81x2 + -64x2 = 17x2
-10 + 6x + 17x2 = -6x + 64x2 + 6x + -64x2

Reorder the terms:
-10 + 6x + 17x2 = -6x + 6x + 64x2 + -64x2

Combine like terms: -6x + 6x = 0
-10 + 6x + 17x2 = 0 + 64x2 + -64x2
-10 + 6x + 17x2 = 64x2 + -64x2

Combine like terms: 64x2 + -64x2 = 0
-10 + 6x + 17x2 = 0

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

Divide each side by '17'.
-0.5882352941 + 0.3529411765x + x2 = 0

Move the constant term to the right:

Add '0.5882352941' to each side of the equation.
-0.5882352941 + 0.3529411765x + 0.5882352941 + x2 = 0 + 0.5882352941

Reorder the terms:
-0.5882352941 + 0.5882352941 + 0.3529411765x + x2 = 0 + 0.5882352941

Combine like terms: -0.5882352941 + 0.5882352941 = 0.0000000000
0.0000000000 + 0.3529411765x + x2 = 0 + 0.5882352941
0.3529411765x + x2 = 0 + 0.5882352941

Combine like terms: 0 + 0.5882352941 = 0.5882352941
0.3529411765x + x2 = 0.5882352941

The x term is 0.3529411765x.  Take half its coefficient (0.1764705883).
Square it (0.03114186853) and add it to both sides.

Add '0.03114186853' to each side of the equation.
0.3529411765x + 0.03114186853 + x2 = 0.5882352941 + 0.03114186853

Reorder the terms:
0.03114186853 + 0.3529411765x + x2 = 0.5882352941 + 0.03114186853

Combine like terms: 0.5882352941 + 0.03114186853 = 0.61937716263
0.03114186853 + 0.3529411765x + x2 = 0.61937716263

Factor a perfect square on the left side:
(x + 0.1764705883)(x + 0.1764705883) = 0.61937716263

Calculate the square root of the right side: 0.787005186

Break this problem into two subproblems by setting 
(x + 0.1764705883) equal to 0.787005186 and -0.787005186.

Subproblem 1

x + 0.1764705883 = 0.787005186 Simplifying x + 0.1764705883 = 0.787005186 Reorder the terms: 0.1764705883 + x = 0.787005186 Solving 0.1764705883 + x = 0.787005186 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1764705883' to each side of the equation. 0.1764705883 + -0.1764705883 + x = 0.787005186 + -0.1764705883 Combine like terms: 0.1764705883 + -0.1764705883 = 0.0000000000 0.0000000000 + x = 0.787005186 + -0.1764705883 x = 0.787005186 + -0.1764705883 Combine like terms: 0.787005186 + -0.1764705883 = 0.6105345977 x = 0.6105345977 Simplifying x = 0.6105345977

Subproblem 2

x + 0.1764705883 = -0.787005186 Simplifying x + 0.1764705883 = -0.787005186 Reorder the terms: 0.1764705883 + x = -0.787005186 Solving 0.1764705883 + x = -0.787005186 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1764705883' to each side of the equation. 0.1764705883 + -0.1764705883 + x = -0.787005186 + -0.1764705883 Combine like terms: 0.1764705883 + -0.1764705883 = 0.0000000000 0.0000000000 + x = -0.787005186 + -0.1764705883 x = -0.787005186 + -0.1764705883 Combine like terms: -0.787005186 + -0.1764705883 = -0.9634757743 x = -0.9634757743 Simplifying x = -0.9634757743

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.6105345977, -0.9634757743}

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