8x^2-16x=-2

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


Simplifying
8x2 + -16x = -2

Reorder the terms:
-16x + 8x2 = -2

Solving
-16x + 8x2 = -2

Solving for variable 'x'.

Reorder the terms:
2 + -16x + 8x2 = -2 + 2

Combine like terms: -2 + 2 = 0
2 + -16x + 8x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(1 + -8x + 4x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(1 + -8x + 4x2)' equal to zero and attempt to solve: Simplifying 1 + -8x + 4x2 = 0 Solving 1 + -8x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 0.25 + -2x + x2 = 0 Move the constant term to the right: Add '-0.25' to each side of the equation. 0.25 + -2x + -0.25 + x2 = 0 + -0.25 Reorder the terms: 0.25 + -0.25 + -2x + x2 = 0 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + -2x + x2 = 0 + -0.25 -2x + x2 = 0 + -0.25 Combine like terms: 0 + -0.25 = -0.25 -2x + x2 = -0.25 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 = -0.25 + 1 Reorder the terms: 1 + -2x + x2 = -0.25 + 1 Combine like terms: -0.25 + 1 = 0.75 1 + -2x + x2 = 0.75 Factor a perfect square on the left side: (x + -1)(x + -1) = 0.75 Calculate the square root of the right side: 0.866025404 Break this problem into two subproblems by setting (x + -1) equal to 0.866025404 and -0.866025404.

Subproblem 1

x + -1 = 0.866025404 Simplifying x + -1 = 0.866025404 Reorder the terms: -1 + x = 0.866025404 Solving -1 + x = 0.866025404 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 = 0.866025404 + 1 Combine like terms: -1 + 1 = 0 0 + x = 0.866025404 + 1 x = 0.866025404 + 1 Combine like terms: 0.866025404 + 1 = 1.866025404 x = 1.866025404 Simplifying x = 1.866025404

Subproblem 2

x + -1 = -0.866025404 Simplifying x + -1 = -0.866025404 Reorder the terms: -1 + x = -0.866025404 Solving -1 + x = -0.866025404 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 = -0.866025404 + 1 Combine like terms: -1 + 1 = 0 0 + x = -0.866025404 + 1 x = -0.866025404 + 1 Combine like terms: -0.866025404 + 1 = 0.133974596 x = 0.133974596 Simplifying x = 0.133974596

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.866025404, 0.133974596}

Solution

x = {1.866025404, 0.133974596}

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