(5y-1)(4y+1)=0

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Solution for (5y-1)(4y+1)=0 equation:


Simplifying
(5y + -1)(4y + 1) = 0

Reorder the terms:
(-1 + 5y)(4y + 1) = 0

Reorder the terms:
(-1 + 5y)(1 + 4y) = 0

Multiply (-1 + 5y) * (1 + 4y)
(-1(1 + 4y) + 5y * (1 + 4y)) = 0
((1 * -1 + 4y * -1) + 5y * (1 + 4y)) = 0
((-1 + -4y) + 5y * (1 + 4y)) = 0
(-1 + -4y + (1 * 5y + 4y * 5y)) = 0
(-1 + -4y + (5y + 20y2)) = 0

Combine like terms: -4y + 5y = 1y
(-1 + 1y + 20y2) = 0

Solving
-1 + 1y + 20y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(-1 + -4y)(1 + -5y) = 0

Subproblem 1

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

Subproblem 2

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

Solution

y = {-0.25, 0.2}

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