(3y-4)(y+4)=

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Solution for (3y-4)(y+4)= equation:


Simplifying
(3y + -4)(y + 4) = 0

Reorder the terms:
(-4 + 3y)(y + 4) = 0

Reorder the terms:
(-4 + 3y)(4 + y) = 0

Multiply (-4 + 3y) * (4 + y)
(-4(4 + y) + 3y * (4 + y)) = 0
((4 * -4 + y * -4) + 3y * (4 + y)) = 0
((-16 + -4y) + 3y * (4 + y)) = 0
(-16 + -4y + (4 * 3y + y * 3y)) = 0
(-16 + -4y + (12y + 3y2)) = 0

Combine like terms: -4y + 12y = 8y
(-16 + 8y + 3y2) = 0

Solving
-16 + 8y + 3y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(-4 + -1y)(4 + -3y) = 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 '(4 + -3y)' equal to zero and attempt to solve: Simplifying 4 + -3y = 0 Solving 4 + -3y = 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 + -3y = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -3y = 0 + -4 -3y = 0 + -4 Combine like terms: 0 + -4 = -4 -3y = -4 Divide each side by '-3'. y = 1.333333333 Simplifying y = 1.333333333

Solution

y = {-4, 1.333333333}

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