15y^2-1=2y

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Solution for 15y^2-1=2y equation:


Simplifying
15y2 + -1 = 2y

Reorder the terms:
-1 + 15y2 = 2y

Solving
-1 + 15y2 = 2y

Solving for variable 'y'.

Reorder the terms:
-1 + -2y + 15y2 = 2y + -2y

Combine like terms: 2y + -2y = 0
-1 + -2y + 15y2 = 0

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

Subproblem 1

Set the factor '(-1 + -5y)' equal to zero and attempt to solve: Simplifying -1 + -5y = 0 Solving -1 + -5y = 0 Move all terms containing y to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -5y = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -5y = 0 + 1 -5y = 0 + 1 Combine like terms: 0 + 1 = 1 -5y = 1 Divide each side by '-5'. y = -0.2 Simplifying y = -0.2

Subproblem 2

Set the factor '(1 + -3y)' equal to zero and attempt to solve: Simplifying 1 + -3y = 0 Solving 1 + -3y = 0 Move all terms containing y to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -3y = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3y = 0 + -1 -3y = 0 + -1 Combine like terms: 0 + -1 = -1 -3y = -1 Divide each side by '-3'. y = 0.3333333333 Simplifying y = 0.3333333333

Solution

y = {-0.2, 0.3333333333}

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