9y^2-12y+4=169

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Solution for 9y^2-12y+4=169 equation:


Simplifying
9y2 + -12y + 4 = 169

Reorder the terms:
4 + -12y + 9y2 = 169

Solving
4 + -12y + 9y2 = 169

Solving for variable 'y'.

Reorder the terms:
4 + -169 + -12y + 9y2 = 169 + -169

Combine like terms: 4 + -169 = -165
-165 + -12y + 9y2 = 169 + -169

Combine like terms: 169 + -169 = 0
-165 + -12y + 9y2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-55 + -4y + 3y2) = 0

Factor a trinomial.
3((-11 + -3y)(5 + -1y)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-11 + -3y)' equal to zero and attempt to solve: Simplifying -11 + -3y = 0 Solving -11 + -3y = 0 Move all terms containing y to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + -3y = 0 + 11 Combine like terms: -11 + 11 = 0 0 + -3y = 0 + 11 -3y = 0 + 11 Combine like terms: 0 + 11 = 11 -3y = 11 Divide each side by '-3'. y = -3.666666667 Simplifying y = -3.666666667

Subproblem 2

Set the factor '(5 + -1y)' equal to zero and attempt to solve: Simplifying 5 + -1y = 0 Solving 5 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1y = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1y = 0 + -5 -1y = 0 + -5 Combine like terms: 0 + -5 = -5 -1y = -5 Divide each side by '-1'. y = 5 Simplifying y = 5

Solution

y = {-3.666666667, 5}

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