10x^2-20x=16

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Solution for 10x^2-20x=16 equation:


Simplifying
10x2 + -20x = 16

Reorder the terms:
-20x + 10x2 = 16

Solving
-20x + 10x2 = 16

Solving for variable 'x'.

Reorder the terms:
-16 + -20x + 10x2 = 16 + -16

Combine like terms: 16 + -16 = 0
-16 + -20x + 10x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-8 + -10x + 5x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-8 + -10x + 5x2)' equal to zero and attempt to solve: Simplifying -8 + -10x + 5x2 = 0 Solving -8 + -10x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -1.6 + -2x + x2 = 0 Move the constant term to the right: Add '1.6' to each side of the equation. -1.6 + -2x + 1.6 + x2 = 0 + 1.6 Reorder the terms: -1.6 + 1.6 + -2x + x2 = 0 + 1.6 Combine like terms: -1.6 + 1.6 = 0.0 0.0 + -2x + x2 = 0 + 1.6 -2x + x2 = 0 + 1.6 Combine like terms: 0 + 1.6 = 1.6 -2x + x2 = 1.6 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 = 1.6 + 1 Reorder the terms: 1 + -2x + x2 = 1.6 + 1 Combine like terms: 1.6 + 1 = 2.6 1 + -2x + x2 = 2.6 Factor a perfect square on the left side: (x + -1)(x + -1) = 2.6 Calculate the square root of the right side: 1.61245155 Break this problem into two subproblems by setting (x + -1) equal to 1.61245155 and -1.61245155.

Subproblem 1

x + -1 = 1.61245155 Simplifying x + -1 = 1.61245155 Reorder the terms: -1 + x = 1.61245155 Solving -1 + x = 1.61245155 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 = 1.61245155 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.61245155 + 1 x = 1.61245155 + 1 Combine like terms: 1.61245155 + 1 = 2.61245155 x = 2.61245155 Simplifying x = 2.61245155

Subproblem 2

x + -1 = -1.61245155 Simplifying x + -1 = -1.61245155 Reorder the terms: -1 + x = -1.61245155 Solving -1 + x = -1.61245155 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 = -1.61245155 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.61245155 + 1 x = -1.61245155 + 1 Combine like terms: -1.61245155 + 1 = -0.61245155 x = -0.61245155 Simplifying x = -0.61245155

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.61245155, -0.61245155}

Solution

x = {2.61245155, -0.61245155}

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