(3y+5)(7y-5)=0

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Solution for (3y+5)(7y-5)=0 equation:


Simplifying
(3y + 5)(7y + -5) = 0

Reorder the terms:
(5 + 3y)(7y + -5) = 0

Reorder the terms:
(5 + 3y)(-5 + 7y) = 0

Multiply (5 + 3y) * (-5 + 7y)
(5(-5 + 7y) + 3y * (-5 + 7y)) = 0
((-5 * 5 + 7y * 5) + 3y * (-5 + 7y)) = 0
((-25 + 35y) + 3y * (-5 + 7y)) = 0
(-25 + 35y + (-5 * 3y + 7y * 3y)) = 0
(-25 + 35y + (-15y + 21y2)) = 0

Combine like terms: 35y + -15y = 20y
(-25 + 20y + 21y2) = 0

Solving
-25 + 20y + 21y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(-5 + -3y)(5 + -7y) = 0

Subproblem 1

Set the factor '(-5 + -3y)' equal to zero and attempt to solve: Simplifying -5 + -3y = 0 Solving -5 + -3y = 0 Move all terms containing y to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -3y = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -3y = 0 + 5 -3y = 0 + 5 Combine like terms: 0 + 5 = 5 -3y = 5 Divide each side by '-3'. y = -1.666666667 Simplifying y = -1.666666667

Subproblem 2

Set the factor '(5 + -7y)' equal to zero and attempt to solve: Simplifying 5 + -7y = 0 Solving 5 + -7y = 0 Move all terms containing y to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -7y = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -7y = 0 + -5 -7y = 0 + -5 Combine like terms: 0 + -5 = -5 -7y = -5 Divide each side by '-7'. y = 0.7142857143 Simplifying y = 0.7142857143

Solution

y = {-1.666666667, 0.7142857143}

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