-2y(4y+5)=

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


Simplifying
-2y(4y + 5) = 0

Reorder the terms:
-2y(5 + 4y) = 0
(5 * -2y + 4y * -2y) = 0
(-10y + -8y2) = 0

Solving
-10y + -8y2 = 0

Solving for variable 'y'.

Factor out the Greatest Common Factor (GCF), '-2y'.
-2y(5 + 4y) = 0

Ignore the factor -2.

Subproblem 1
Set the factor 'y' equal to zero and attempt to solve:

Simplifying
y = 0

Solving
y = 0

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

Simplifying
y = 0

Subproblem 2
Set the factor '(5 + 4y)' equal to zero and attempt to solve:

Simplifying
5 + 4y = 0

Solving
5 + 4y = 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 + 4y = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 4y = 0 + -5
4y = 0 + -5

Combine like terms: 0 + -5 = -5
4y = -5

Divide each side by '4'.
y = -1.25

Simplifying
y = -1.25
Solution
y = {0, -1.25}

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