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

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


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

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

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

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

Combine like terms: -25y + 21y = -4y
(-35 + -4y + 15y2) = 0

Solving
-35 + -4y + 15y2 = 0

Solving for variable 'y'.

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


Subproblem 1
Set the factor '(-7 + -5y)' equal to zero and attempt to solve:

Simplifying
-7 + -5y = 0

Solving
-7 + -5y = 0

Move all terms containing y to the left, all other terms to the right.

Add '7' to each side of the equation.
-7 + 7 + -5y = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -5y = 0 + 7
-5y = 0 + 7

Combine like terms: 0 + 7 = 7
-5y = 7

Divide each side by '-5'.
y = -1.4

Simplifying
y = -1.4

Subproblem 2
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
Solution
y = {-1.4, 1.666666667}

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