3y^2-63=20y

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Solution for 3y^2-63=20y equation:


Simplifying
3y2 + -63 = 20y

Reorder the terms:
-63 + 3y2 = 20y

Solving
-63 + 3y2 = 20y

Solving for variable 'y'.

Reorder the terms:
-63 + -20y + 3y2 = 20y + -20y

Combine like terms: 20y + -20y = 0
-63 + -20y + 3y2 = 0

Factor a trinomial.
(-7 + -3y)(9 + -1y) = 0

Subproblem 1

Set the factor '(-7 + -3y)' equal to zero and attempt to solve: Simplifying -7 + -3y = 0 Solving -7 + -3y = 0 Move all terms containing y to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -3y = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -3y = 0 + 7 -3y = 0 + 7 Combine like terms: 0 + 7 = 7 -3y = 7 Divide each side by '-3'. y = -2.333333333 Simplifying y = -2.333333333

Subproblem 2

Set the factor '(9 + -1y)' equal to zero and attempt to solve: Simplifying 9 + -1y = 0 Solving 9 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1y = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1y = 0 + -9 -1y = 0 + -9 Combine like terms: 0 + -9 = -9 -1y = -9 Divide each side by '-1'. y = 9 Simplifying y = 9

Solution

y = {-2.333333333, 9}

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