-9x^2-8x-6=0

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Solution for -9x^2-8x-6=0 equation:


Simplifying
-9x2 + -8x + -6 = 0

Reorder the terms:
-6 + -8x + -9x2 = 0

Solving
-6 + -8x + -9x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-1'.
-1(6 + 8x + 9x2) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(6 + 8x + 9x2)' equal to zero and attempt to solve: Simplifying 6 + 8x + 9x2 = 0 Solving 6 + 8x + 9x2 = 0 Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. 0.6666666667 + 0.8888888889x + x2 = 0 Move the constant term to the right: Add '-0.6666666667' to each side of the equation. 0.6666666667 + 0.8888888889x + -0.6666666667 + x2 = 0 + -0.6666666667 Reorder the terms: 0.6666666667 + -0.6666666667 + 0.8888888889x + x2 = 0 + -0.6666666667 Combine like terms: 0.6666666667 + -0.6666666667 = 0.0000000000 0.0000000000 + 0.8888888889x + x2 = 0 + -0.6666666667 0.8888888889x + x2 = 0 + -0.6666666667 Combine like terms: 0 + -0.6666666667 = -0.6666666667 0.8888888889x + x2 = -0.6666666667 The x term is 0.8888888889x. Take half its coefficient (0.4444444445). Square it (0.1975308642) and add it to both sides. Add '0.1975308642' to each side of the equation. 0.8888888889x + 0.1975308642 + x2 = -0.6666666667 + 0.1975308642 Reorder the terms: 0.1975308642 + 0.8888888889x + x2 = -0.6666666667 + 0.1975308642 Combine like terms: -0.6666666667 + 0.1975308642 = -0.4691358025 0.1975308642 + 0.8888888889x + x2 = -0.4691358025 Factor a perfect square on the left side: (x + 0.4444444445)(x + 0.4444444445) = -0.4691358025 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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