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

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


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

Multiply (2x + -5y) * (x + 2y)
(2x * (x + 2y) + -5y * (x + 2y)) = 0
((x * 2x + 2y * 2x) + -5y * (x + 2y)) = 0

Reorder the terms:
((4xy + 2x2) + -5y * (x + 2y)) = 0
((4xy + 2x2) + -5y * (x + 2y)) = 0
(4xy + 2x2 + (x * -5y + 2y * -5y)) = 0
(4xy + 2x2 + (-5xy + -10y2)) = 0

Reorder the terms:
(4xy + -5xy + 2x2 + -10y2) = 0

Combine like terms: 4xy + -5xy = -1xy
(-1xy + 2x2 + -10y2) = 0

Solving
-1xy + 2x2 + -10y2 = 0

Solving for variable 'x'.

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


Subproblem 1
Set the factor '(2x + -5y)' equal to zero and attempt to solve:

Simplifying
2x + -5y = 0

Solving
2x + -5y = 0

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

Add '5y' to each side of the equation.
2x + -5y + 5y = 0 + 5y

Combine like terms: -5y + 5y = 0
2x + 0 = 0 + 5y
2x = 0 + 5y
Remove the zero:
2x = 5y

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

Simplifying
x = 2.5y

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

Simplifying
x + 2y = 0

Solving
x + 2y = 0

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

Add '-2y' to each side of the equation.
x + 2y + -2y = 0 + -2y

Combine like terms: 2y + -2y = 0
x + 0 = 0 + -2y
x = 0 + -2y
Remove the zero:
x = -2y

Simplifying
x = -2y
Solution
x = {2.5y, -2y}

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