8x^2-16x+12=7

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Solution for 8x^2-16x+12=7 equation:


Simplifying
8x2 + -16x + 12 = 7

Reorder the terms:
12 + -16x + 8x2 = 7

Solving
12 + -16x + 8x2 = 7

Solving for variable 'x'.

Reorder the terms:
12 + -7 + -16x + 8x2 = 7 + -7

Combine like terms: 12 + -7 = 5
5 + -16x + 8x2 = 7 + -7

Combine like terms: 7 + -7 = 0
5 + -16x + 8x2 = 0

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

Divide each side by '8'.
0.625 + -2x + x2 = 0

Move the constant term to the right:

Add '-0.625' to each side of the equation.
0.625 + -2x + -0.625 + x2 = 0 + -0.625

Reorder the terms:
0.625 + -0.625 + -2x + x2 = 0 + -0.625

Combine like terms: 0.625 + -0.625 = 0.000
0.000 + -2x + x2 = 0 + -0.625
-2x + x2 = 0 + -0.625

Combine like terms: 0 + -0.625 = -0.625
-2x + x2 = -0.625

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 = -0.625 + 1

Reorder the terms:
1 + -2x + x2 = -0.625 + 1

Combine like terms: -0.625 + 1 = 0.375
1 + -2x + x2 = 0.375

Factor a perfect square on the left side:
(x + -1)(x + -1) = 0.375

Calculate the square root of the right side: 0.612372436

Break this problem into two subproblems by setting 
(x + -1) equal to 0.612372436 and -0.612372436.

Subproblem 1

x + -1 = 0.612372436 Simplifying x + -1 = 0.612372436 Reorder the terms: -1 + x = 0.612372436 Solving -1 + x = 0.612372436 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 = 0.612372436 + 1 Combine like terms: -1 + 1 = 0 0 + x = 0.612372436 + 1 x = 0.612372436 + 1 Combine like terms: 0.612372436 + 1 = 1.612372436 x = 1.612372436 Simplifying x = 1.612372436

Subproblem 2

x + -1 = -0.612372436 Simplifying x + -1 = -0.612372436 Reorder the terms: -1 + x = -0.612372436 Solving -1 + x = -0.612372436 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 = -0.612372436 + 1 Combine like terms: -1 + 1 = 0 0 + x = -0.612372436 + 1 x = -0.612372436 + 1 Combine like terms: -0.612372436 + 1 = 0.387627564 x = 0.387627564 Simplifying x = 0.387627564

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.612372436, 0.387627564}

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