28y^2-84y+20y-60=0

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Solution for 28y^2-84y+20y-60=0 equation:


Simplifying
28y2 + -84y + 20y + -60 = 0

Reorder the terms:
-60 + -84y + 20y + 28y2 = 0

Combine like terms: -84y + 20y = -64y
-60 + -64y + 28y2 = 0

Solving
-60 + -64y + 28y2 = 0

Solving for variable 'y'.

Factor out the Greatest Common Factor (GCF), '4'.
4(-15 + -16y + 7y2) = 0

Factor a trinomial.
4((-5 + -7y)(3 + -1y)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-5 + -7y)' equal to zero and attempt to solve: Simplifying -5 + -7y = 0 Solving -5 + -7y = 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 + -7y = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -7y = 0 + 5 -7y = 0 + 5 Combine like terms: 0 + 5 = 5 -7y = 5 Divide each side by '-7'. y = -0.7142857143 Simplifying y = -0.7142857143

Subproblem 2

Set the factor '(3 + -1y)' equal to zero and attempt to solve: Simplifying 3 + -1y = 0 Solving 3 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1y = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1y = 0 + -3 -1y = 0 + -3 Combine like terms: 0 + -3 = -3 -1y = -3 Divide each side by '-1'. y = 3 Simplifying y = 3

Solution

y = {-0.7142857143, 3}

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