-5x^2-7x-5=0

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Solution for -5x^2-7x-5=0 equation:


Simplifying
-5x2 + -7x + -5 = 0

Reorder the terms:
-5 + -7x + -5x2 = 0

Solving
-5 + -7x + -5x2 = 0

Solving for variable 'x'.

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

Ignore the factor -1.

Subproblem 1

Set the factor '(5 + 7x + 5x2)' equal to zero and attempt to solve: Simplifying 5 + 7x + 5x2 = 0 Solving 5 + 7x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. 1 + 1.4x + x2 = 0 Move the constant term to the right: Add '-1' to each side of the equation. 1 + 1.4x + -1 + x2 = 0 + -1 Reorder the terms: 1 + -1 + 1.4x + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 1.4x + x2 = 0 + -1 1.4x + x2 = 0 + -1 Combine like terms: 0 + -1 = -1 1.4x + x2 = -1 The x term is 1.4x. Take half its coefficient (0.7). Square it (0.49) and add it to both sides. Add '0.49' to each side of the equation. 1.4x + 0.49 + x2 = -1 + 0.49 Reorder the terms: 0.49 + 1.4x + x2 = -1 + 0.49 Combine like terms: -1 + 0.49 = -0.51 0.49 + 1.4x + x2 = -0.51 Factor a perfect square on the left side: (x + 0.7)(x + 0.7) = -0.51 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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