10x^2-4x=-8

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Solution for 10x^2-4x=-8 equation:


Simplifying
10x2 + -4x = -8

Reorder the terms:
-4x + 10x2 = -8

Solving
-4x + 10x2 = -8

Solving for variable 'x'.

Reorder the terms:
8 + -4x + 10x2 = -8 + 8

Combine like terms: -8 + 8 = 0
8 + -4x + 10x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(4 + -2x + 5x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(4 + -2x + 5x2)' equal to zero and attempt to solve: Simplifying 4 + -2x + 5x2 = 0 Solving 4 + -2x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. 0.8 + -0.4x + x2 = 0 Move the constant term to the right: Add '-0.8' to each side of the equation. 0.8 + -0.4x + -0.8 + x2 = 0 + -0.8 Reorder the terms: 0.8 + -0.8 + -0.4x + x2 = 0 + -0.8 Combine like terms: 0.8 + -0.8 = 0.0 0.0 + -0.4x + x2 = 0 + -0.8 -0.4x + x2 = 0 + -0.8 Combine like terms: 0 + -0.8 = -0.8 -0.4x + x2 = -0.8 The x term is -0.4x. Take half its coefficient (-0.2). Square it (0.04) and add it to both sides. Add '0.04' to each side of the equation. -0.4x + 0.04 + x2 = -0.8 + 0.04 Reorder the terms: 0.04 + -0.4x + x2 = -0.8 + 0.04 Combine like terms: -0.8 + 0.04 = -0.76 0.04 + -0.4x + x2 = -0.76 Factor a perfect square on the left side: (x + -0.2)(x + -0.2) = -0.76 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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