3y(2y-5)=75

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Solution for 3y(2y-5)=75 equation:


Simplifying
3y(2y + -5) = 75

Reorder the terms:
3y(-5 + 2y) = 75
(-5 * 3y + 2y * 3y) = 75
(-15y + 6y2) = 75

Solving
-15y + 6y2 = 75

Solving for variable 'y'.

Reorder the terms:
-75 + -15y + 6y2 = 75 + -75

Combine like terms: 75 + -75 = 0
-75 + -15y + 6y2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-25 + -5y + 2y2) = 0

Factor a trinomial.
3((-5 + -2y)(5 + -1y)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-5 + -2y)' equal to zero and attempt to solve: Simplifying -5 + -2y = 0 Solving -5 + -2y = 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 + -2y = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -2y = 0 + 5 -2y = 0 + 5 Combine like terms: 0 + 5 = 5 -2y = 5 Divide each side by '-2'. y = -2.5 Simplifying y = -2.5

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 = {-2.5, 5}

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