2y(4y+5)=4y-1

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Solution for 2y(4y+5)=4y-1 equation:


Simplifying
2y(4y + 5) = 4y + -1

Reorder the terms:
2y(5 + 4y) = 4y + -1
(5 * 2y + 4y * 2y) = 4y + -1
(10y + 8y2) = 4y + -1

Reorder the terms:
10y + 8y2 = -1 + 4y

Solving
10y + 8y2 = -1 + 4y

Solving for variable 'y'.

Reorder the terms:
1 + 10y + -4y + 8y2 = -1 + 4y + 1 + -4y

Combine like terms: 10y + -4y = 6y
1 + 6y + 8y2 = -1 + 4y + 1 + -4y

Reorder the terms:
1 + 6y + 8y2 = -1 + 1 + 4y + -4y

Combine like terms: -1 + 1 = 0
1 + 6y + 8y2 = 0 + 4y + -4y
1 + 6y + 8y2 = 4y + -4y

Combine like terms: 4y + -4y = 0
1 + 6y + 8y2 = 0

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

Subproblem 1

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

Subproblem 2

Set the factor '(1 + 4y)' equal to zero and attempt to solve: Simplifying 1 + 4y = 0 Solving 1 + 4y = 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 + 4y = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 4y = 0 + -1 4y = 0 + -1 Combine like terms: 0 + -1 = -1 4y = -1 Divide each side by '4'. y = -0.25 Simplifying y = -0.25

Solution

y = {-0.5, -0.25}

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