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

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


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

Reorder the terms:
(5 + 2y)(y + 5) = -4(2y + 5)

Reorder the terms:
(5 + 2y)(5 + y) = -4(2y + 5)

Multiply (5 + 2y) * (5 + y)
(5(5 + y) + 2y * (5 + y)) = -4(2y + 5)
((5 * 5 + y * 5) + 2y * (5 + y)) = -4(2y + 5)
((25 + 5y) + 2y * (5 + y)) = -4(2y + 5)
(25 + 5y + (5 * 2y + y * 2y)) = -4(2y + 5)
(25 + 5y + (10y + 2y2)) = -4(2y + 5)

Combine like terms: 5y + 10y = 15y
(25 + 15y + 2y2) = -4(2y + 5)

Reorder the terms:
25 + 15y + 2y2 = -4(5 + 2y)
25 + 15y + 2y2 = (5 * -4 + 2y * -4)
25 + 15y + 2y2 = (-20 + -8y)

Solving
25 + 15y + 2y2 = -20 + -8y

Solving for variable 'y'.

Reorder the terms:
25 + 20 + 15y + 8y + 2y2 = -20 + -8y + 20 + 8y

Combine like terms: 25 + 20 = 45
45 + 15y + 8y + 2y2 = -20 + -8y + 20 + 8y

Combine like terms: 15y + 8y = 23y
45 + 23y + 2y2 = -20 + -8y + 20 + 8y

Reorder the terms:
45 + 23y + 2y2 = -20 + 20 + -8y + 8y

Combine like terms: -20 + 20 = 0
45 + 23y + 2y2 = 0 + -8y + 8y
45 + 23y + 2y2 = -8y + 8y

Combine like terms: -8y + 8y = 0
45 + 23y + 2y2 = 0

Factor a trinomial.
(9 + y)(5 + 2y) = 0


Subproblem 1
Set the factor '(9 + y)' equal to zero and attempt to solve:

Simplifying
9 + y = 0

Solving
9 + y = 0

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

Add '-9' to each side of the equation.
9 + -9 + y = 0 + -9

Combine like terms: 9 + -9 = 0
0 + y = 0 + -9
y = 0 + -9

Combine like terms: 0 + -9 = -9
y = -9

Simplifying
y = -9

Subproblem 2
Set the factor '(5 + 2y)' equal to zero and attempt to solve:

Simplifying
5 + 2y = 0

Solving
5 + 2y = 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 + 2y = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 2y = 0 + -5
2y = 0 + -5

Combine like terms: 0 + -5 = -5
2y = -5

Divide each side by '2'.
y = -2.5

Simplifying
y = -2.5
Solution
y = {-9, -2.5}

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