-3x^2-7x=12

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Solution for -3x^2-7x=12 equation:


Simplifying
-3x2 + -7x = 12

Reorder the terms:
-7x + -3x2 = 12

Solving
-7x + -3x2 = 12

Solving for variable 'x'.

Reorder the terms:
-12 + -7x + -3x2 = 12 + -12

Combine like terms: 12 + -12 = 0
-12 + -7x + -3x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(12 + 7x + 3x2) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(12 + 7x + 3x2)' equal to zero and attempt to solve: Simplifying 12 + 7x + 3x2 = 0 Solving 12 + 7x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 4 + 2.333333333x + x2 = 0 Move the constant term to the right: Add '-4' to each side of the equation. 4 + 2.333333333x + -4 + x2 = 0 + -4 Reorder the terms: 4 + -4 + 2.333333333x + x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 2.333333333x + x2 = 0 + -4 2.333333333x + x2 = 0 + -4 Combine like terms: 0 + -4 = -4 2.333333333x + x2 = -4 The x term is 2.333333333x. Take half its coefficient (1.166666667). Square it (1.361111112) and add it to both sides. Add '1.361111112' to each side of the equation. 2.333333333x + 1.361111112 + x2 = -4 + 1.361111112 Reorder the terms: 1.361111112 + 2.333333333x + x2 = -4 + 1.361111112 Combine like terms: -4 + 1.361111112 = -2.638888888 1.361111112 + 2.333333333x + x2 = -2.638888888 Factor a perfect square on the left side: (x + 1.166666667)(x + 1.166666667) = -2.638888888 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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