-5x-12=2x^2

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Solution for -5x-12=2x^2 equation:


Simplifying
-5x + -12 = 2x2

Reorder the terms:
-12 + -5x = 2x2

Solving
-12 + -5x = 2x2

Solving for variable 'x'.

Combine like terms: 2x2 + -2x2 = 0
-12 + -5x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(12 + 5x + 2x2) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(12 + 5x + 2x2)' equal to zero and attempt to solve: Simplifying 12 + 5x + 2x2 = 0 Solving 12 + 5x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 6 + 2.5x + x2 = 0 Move the constant term to the right: Add '-6' to each side of the equation. 6 + 2.5x + -6 + x2 = 0 + -6 Reorder the terms: 6 + -6 + 2.5x + x2 = 0 + -6 Combine like terms: 6 + -6 = 0 0 + 2.5x + x2 = 0 + -6 2.5x + x2 = 0 + -6 Combine like terms: 0 + -6 = -6 2.5x + x2 = -6 The x term is 2.5x. Take half its coefficient (1.25). Square it (1.5625) and add it to both sides. Add '1.5625' to each side of the equation. 2.5x + 1.5625 + x2 = -6 + 1.5625 Reorder the terms: 1.5625 + 2.5x + x2 = -6 + 1.5625 Combine like terms: -6 + 1.5625 = -4.4375 1.5625 + 2.5x + x2 = -4.4375 Factor a perfect square on the left side: (x + 1.25)(x + 1.25) = -4.4375 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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