(5y+9)(5y+8)=

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Solution for (5y+9)(5y+8)= equation: 


Simplifying
(5y + 9)(5y + 8) = 0

Reorder the terms:
(9 + 5y)(5y + 8) = 0

Reorder the terms:
(9 + 5y)(8 + 5y) = 0

Multiply (9 + 5y) * (8 + 5y)
(9(8 + 5y) + 5y * (8 + 5y)) = 0
((8 * 9 + 5y * 9) + 5y * (8 + 5y)) = 0
((72 + 45y) + 5y * (8 + 5y)) = 0
(72 + 45y + (8 * 5y + 5y * 5y)) = 0
(72 + 45y + (40y + 25y2)) = 0

Combine like terms: 45y + 40y = 85y
(72 + 85y + 25y2) = 0

Solving
72 + 85y + 25y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(9 + 5y)(8 + 5y) = 0


Subproblem 1
Set the factor '(9 + 5y)' equal to zero and attempt to solve:

Simplifying
9 + 5y = 0

Solving
9 + 5y = 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 + 5y = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 5y = 0 + -9
5y = 0 + -9

Combine like terms: 0 + -9 = -9
5y = -9

Divide each side by '5'.
y = -1.8

Simplifying
y = -1.8

Subproblem 2
Set the factor '(8 + 5y)' equal to zero and attempt to solve:

Simplifying
8 + 5y = 0

Solving
8 + 5y = 0

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

Add '-8' to each side of the equation.
8 + -8 + 5y = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 5y = 0 + -8
5y = 0 + -8

Combine like terms: 0 + -8 = -8
5y = -8

Divide each side by '5'.
y = -1.6

Simplifying
y = -1.6
Solution
y = {-1.8, -1.6}

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