9y^2+81y-12=6y

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Solution for 9y^2+81y-12=6y equation:


Simplifying
9y2 + 81y + -12 = 6y

Reorder the terms:
-12 + 81y + 9y2 = 6y

Solving
-12 + 81y + 9y2 = 6y

Solving for variable 'y'.

Reorder the terms:
-12 + 81y + -6y + 9y2 = 6y + -6y

Combine like terms: 81y + -6y = 75y
-12 + 75y + 9y2 = 6y + -6y

Combine like terms: 6y + -6y = 0
-12 + 75y + 9y2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-4 + 25y + 3y2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-4 + 25y + 3y2)' equal to zero and attempt to solve: Simplifying -4 + 25y + 3y2 = 0 Solving -4 + 25y + 3y2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -1.333333333 + 8.333333333y + y2 = 0 Move the constant term to the right: Add '1.333333333' to each side of the equation. -1.333333333 + 8.333333333y + 1.333333333 + y2 = 0 + 1.333333333 Reorder the terms: -1.333333333 + 1.333333333 + 8.333333333y + y2 = 0 + 1.333333333 Combine like terms: -1.333333333 + 1.333333333 = 0.000000000 0.000000000 + 8.333333333y + y2 = 0 + 1.333333333 8.333333333y + y2 = 0 + 1.333333333 Combine like terms: 0 + 1.333333333 = 1.333333333 8.333333333y + y2 = 1.333333333 The y term is 8.333333333y. Take half its coefficient (4.166666667). Square it (17.36111111) and add it to both sides. Add '17.36111111' to each side of the equation. 8.333333333y + 17.36111111 + y2 = 1.333333333 + 17.36111111 Reorder the terms: 17.36111111 + 8.333333333y + y2 = 1.333333333 + 17.36111111 Combine like terms: 1.333333333 + 17.36111111 = 18.694444443 17.36111111 + 8.333333333y + y2 = 18.694444443 Factor a perfect square on the left side: (y + 4.166666667)(y + 4.166666667) = 18.694444443 Calculate the square root of the right side: 4.323707257 Break this problem into two subproblems by setting (y + 4.166666667) equal to 4.323707257 and -4.323707257.

Subproblem 1

y + 4.166666667 = 4.323707257 Simplifying y + 4.166666667 = 4.323707257 Reorder the terms: 4.166666667 + y = 4.323707257 Solving 4.166666667 + y = 4.323707257 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-4.166666667' to each side of the equation. 4.166666667 + -4.166666667 + y = 4.323707257 + -4.166666667 Combine like terms: 4.166666667 + -4.166666667 = 0.000000000 0.000000000 + y = 4.323707257 + -4.166666667 y = 4.323707257 + -4.166666667 Combine like terms: 4.323707257 + -4.166666667 = 0.15704059 y = 0.15704059 Simplifying y = 0.15704059

Subproblem 2

y + 4.166666667 = -4.323707257 Simplifying y + 4.166666667 = -4.323707257 Reorder the terms: 4.166666667 + y = -4.323707257 Solving 4.166666667 + y = -4.323707257 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-4.166666667' to each side of the equation. 4.166666667 + -4.166666667 + y = -4.323707257 + -4.166666667 Combine like terms: 4.166666667 + -4.166666667 = 0.000000000 0.000000000 + y = -4.323707257 + -4.166666667 y = -4.323707257 + -4.166666667 Combine like terms: -4.323707257 + -4.166666667 = -8.490373924 y = -8.490373924 Simplifying y = -8.490373924

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.15704059, -8.490373924}

Solution

y = {0.15704059, -8.490373924}

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