-25=4y^2-20y

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Solution for -25=4y^2-20y equation:


Simplifying
-25 = 4y2 + -20y

Reorder the terms:
-25 = -20y + 4y2

Solving
-25 = -20y + 4y2

Solving for variable 'y'.

Reorder the terms:
-25 + 20y + -4y2 = -20y + 20y + 4y2 + -4y2

Combine like terms: -20y + 20y = 0
-25 + 20y + -4y2 = 0 + 4y2 + -4y2
-25 + 20y + -4y2 = 4y2 + -4y2

Combine like terms: 4y2 + -4y2 = 0
-25 + 20y + -4y2 = 0

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

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 + -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

Solution

y = {2.5, 2.5}

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