y^2=20y-36

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Solution for y^2=20y-36 equation:


Simplifying
y2 = 20y + -36

Reorder the terms:
y2 = -36 + 20y

Solving
y2 = -36 + 20y

Solving for variable 'y'.

Reorder the terms:
36 + -20y + y2 = -36 + 20y + 36 + -20y

Reorder the terms:
36 + -20y + y2 = -36 + 36 + 20y + -20y

Combine like terms: -36 + 36 = 0
36 + -20y + y2 = 0 + 20y + -20y
36 + -20y + y2 = 20y + -20y

Combine like terms: 20y + -20y = 0
36 + -20y + y2 = 0

Factor a trinomial.
(2 + -1y)(18 + -1y) = 0

Subproblem 1

Set the factor '(2 + -1y)' equal to zero and attempt to solve: Simplifying 2 + -1y = 0 Solving 2 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1y = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1y = 0 + -2 -1y = 0 + -2 Combine like terms: 0 + -2 = -2 -1y = -2 Divide each side by '-1'. y = 2 Simplifying y = 2

Subproblem 2

Set the factor '(18 + -1y)' equal to zero and attempt to solve: Simplifying 18 + -1y = 0 Solving 18 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -18 + -1y = 0 + -18 Combine like terms: 18 + -18 = 0 0 + -1y = 0 + -18 -1y = 0 + -18 Combine like terms: 0 + -18 = -18 -1y = -18 Divide each side by '-1'. y = 18 Simplifying y = 18

Solution

y = {2, 18}

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