8x^2=16x-7.1

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Solution for 8x^2=16x-7.1 equation:


Simplifying
8x2 = 16x + -7.1

Reorder the terms:
8x2 = -7.1 + 16x

Solving
8x2 = -7.1 + 16x

Solving for variable 'x'.

Reorder the terms:
7.1 + -16x + 8x2 = -7.1 + 16x + 7.1 + -16x

Reorder the terms:
7.1 + -16x + 8x2 = -7.1 + 7.1 + 16x + -16x

Combine like terms: -7.1 + 7.1 = 0.0
7.1 + -16x + 8x2 = 0.0 + 16x + -16x
7.1 + -16x + 8x2 = 16x + -16x

Combine like terms: 16x + -16x = 0
7.1 + -16x + 8x2 = 0

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

Divide each side by '8'.
0.8875 + -2x + x2 = 0

Move the constant term to the right:

Add '-0.8875' to each side of the equation.
0.8875 + -2x + -0.8875 + x2 = 0 + -0.8875

Reorder the terms:
0.8875 + -0.8875 + -2x + x2 = 0 + -0.8875

Combine like terms: 0.8875 + -0.8875 = 0.0000
0.0000 + -2x + x2 = 0 + -0.8875
-2x + x2 = 0 + -0.8875

Combine like terms: 0 + -0.8875 = -0.8875
-2x + x2 = -0.8875

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -0.8875 + 1

Reorder the terms:
1 + -2x + x2 = -0.8875 + 1

Combine like terms: -0.8875 + 1 = 0.1125
1 + -2x + x2 = 0.1125

Factor a perfect square on the left side:
(x + -1)(x + -1) = 0.1125

Calculate the square root of the right side: 0.335410197

Break this problem into two subproblems by setting 
(x + -1) equal to 0.335410197 and -0.335410197.

Subproblem 1

x + -1 = 0.335410197 Simplifying x + -1 = 0.335410197 Reorder the terms: -1 + x = 0.335410197 Solving -1 + x = 0.335410197 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 0.335410197 + 1 Combine like terms: -1 + 1 = 0 0 + x = 0.335410197 + 1 x = 0.335410197 + 1 Combine like terms: 0.335410197 + 1 = 1.335410197 x = 1.335410197 Simplifying x = 1.335410197

Subproblem 2

x + -1 = -0.335410197 Simplifying x + -1 = -0.335410197 Reorder the terms: -1 + x = -0.335410197 Solving -1 + x = -0.335410197 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -0.335410197 + 1 Combine like terms: -1 + 1 = 0 0 + x = -0.335410197 + 1 x = -0.335410197 + 1 Combine like terms: -0.335410197 + 1 = 0.664589803 x = 0.664589803 Simplifying x = 0.664589803

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.335410197, 0.664589803}

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