-3x^2-5x=7

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Solution for -3x^2-5x=7 equation:


Simplifying
-3x2 + -5x = 7

Reorder the terms:
-5x + -3x2 = 7

Solving
-5x + -3x2 = 7

Solving for variable 'x'.

Reorder the terms:
-7 + -5x + -3x2 = 7 + -7

Combine like terms: 7 + -7 = 0
-7 + -5x + -3x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(7 + 5x + 3x2) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(7 + 5x + 3x2)' equal to zero and attempt to solve: Simplifying 7 + 5x + 3x2 = 0 Solving 7 + 5x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 2.333333333 + 1.666666667x + x2 = 0 Move the constant term to the right: Add '-2.333333333' to each side of the equation. 2.333333333 + 1.666666667x + -2.333333333 + x2 = 0 + -2.333333333 Reorder the terms: 2.333333333 + -2.333333333 + 1.666666667x + x2 = 0 + -2.333333333 Combine like terms: 2.333333333 + -2.333333333 = 0.000000000 0.000000000 + 1.666666667x + x2 = 0 + -2.333333333 1.666666667x + x2 = 0 + -2.333333333 Combine like terms: 0 + -2.333333333 = -2.333333333 1.666666667x + x2 = -2.333333333 The x term is 1.666666667x. Take half its coefficient (0.8333333335). Square it (0.6944444447) and add it to both sides. Add '0.6944444447' to each side of the equation. 1.666666667x + 0.6944444447 + x2 = -2.333333333 + 0.6944444447 Reorder the terms: 0.6944444447 + 1.666666667x + x2 = -2.333333333 + 0.6944444447 Combine like terms: -2.333333333 + 0.6944444447 = -1.6388888883 0.6944444447 + 1.666666667x + x2 = -1.6388888883 Factor a perfect square on the left side: (x + 0.8333333335)(x + 0.8333333335) = -1.6388888883 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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