2y^2=4-7y

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Solution for 2y^2=4-7y equation:


Simplifying
2y2 = 4 + -7y

Solving
2y2 = 4 + -7y

Solving for variable 'y'.

Reorder the terms:
-4 + 7y + 2y2 = 4 + -7y + -4 + 7y

Reorder the terms:
-4 + 7y + 2y2 = 4 + -4 + -7y + 7y

Combine like terms: 4 + -4 = 0
-4 + 7y + 2y2 = 0 + -7y + 7y
-4 + 7y + 2y2 = -7y + 7y

Combine like terms: -7y + 7y = 0
-4 + 7y + 2y2 = 0

Factor a trinomial.
(-4 + -1y)(1 + -2y) = 0

Subproblem 1

Set the factor '(-4 + -1y)' equal to zero and attempt to solve: Simplifying -4 + -1y = 0 Solving -4 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1y = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1y = 0 + 4 -1y = 0 + 4 Combine like terms: 0 + 4 = 4 -1y = 4 Divide each side by '-1'. y = -4 Simplifying y = -4

Subproblem 2

Set the factor '(1 + -2y)' equal to zero and attempt to solve: Simplifying 1 + -2y = 0 Solving 1 + -2y = 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 + -2y = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2y = 0 + -1 -2y = 0 + -1 Combine like terms: 0 + -1 = -1 -2y = -1 Divide each side by '-2'. y = 0.5 Simplifying y = 0.5

Solution

y = {-4, 0.5}

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