(-9y^2-5y)+(2y^2+y-5)=

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Solution for (-9y^2-5y)+(2y^2+y-5)= equation:


Simplifying
(-9y2 + -5y) + (2y2 + y + -5) = 0

Reorder the terms:
(-5y + -9y2) + (2y2 + y + -5) = 0

Remove parenthesis around (-5y + -9y2)
-5y + -9y2 + (2y2 + y + -5) = 0

Reorder the terms:
-5y + -9y2 + (-5 + y + 2y2) = 0

Remove parenthesis around (-5 + y + 2y2)
-5y + -9y2 + -5 + y + 2y2 = 0

Reorder the terms:
-5 + -5y + y + -9y2 + 2y2 = 0

Combine like terms: -5y + y = -4y
-5 + -4y + -9y2 + 2y2 = 0

Combine like terms: -9y2 + 2y2 = -7y2
-5 + -4y + -7y2 = 0

Solving
-5 + -4y + -7y2 = 0

Solving for variable 'y'.

Factor out the Greatest Common Factor (GCF), '-1'.
-1(5 + 4y + 7y2) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(5 + 4y + 7y2)' equal to zero and attempt to solve: Simplifying 5 + 4y + 7y2 = 0 Solving 5 + 4y + 7y2 = 0 Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. 0.7142857143 + 0.5714285714y + y2 = 0 Move the constant term to the right: Add '-0.7142857143' to each side of the equation. 0.7142857143 + 0.5714285714y + -0.7142857143 + y2 = 0 + -0.7142857143 Reorder the terms: 0.7142857143 + -0.7142857143 + 0.5714285714y + y2 = 0 + -0.7142857143 Combine like terms: 0.7142857143 + -0.7142857143 = 0.0000000000 0.0000000000 + 0.5714285714y + y2 = 0 + -0.7142857143 0.5714285714y + y2 = 0 + -0.7142857143 Combine like terms: 0 + -0.7142857143 = -0.7142857143 0.5714285714y + y2 = -0.7142857143 The y term is 0.5714285714y. Take half its coefficient (0.2857142857). Square it (0.08163265305) and add it to both sides. Add '0.08163265305' to each side of the equation. 0.5714285714y + 0.08163265305 + y2 = -0.7142857143 + 0.08163265305 Reorder the terms: 0.08163265305 + 0.5714285714y + y2 = -0.7142857143 + 0.08163265305 Combine like terms: -0.7142857143 + 0.08163265305 = -0.63265306125 0.08163265305 + 0.5714285714y + y2 = -0.63265306125 Factor a perfect square on the left side: (y + 0.2857142857)(y + 0.2857142857) = -0.63265306125 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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