(2x+5y)(3x-8y)=

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Solution for (2x+5y)(3x-8y)= equation: 


Simplifying
(2x + 5y)(3x + -8y) = 0

Multiply (2x + 5y) * (3x + -8y)
(2x * (3x + -8y) + 5y * (3x + -8y)) = 0
((3x * 2x + -8y * 2x) + 5y * (3x + -8y)) = 0

Reorder the terms:
((-16xy + 6x2) + 5y * (3x + -8y)) = 0
((-16xy + 6x2) + 5y * (3x + -8y)) = 0
(-16xy + 6x2 + (3x * 5y + -8y * 5y)) = 0
(-16xy + 6x2 + (15xy + -40y2)) = 0

Reorder the terms:
(-16xy + 15xy + 6x2 + -40y2) = 0

Combine like terms: -16xy + 15xy = -1xy
(-1xy + 6x2 + -40y2) = 0

Solving
-1xy + 6x2 + -40y2 = 0

Solving for variable 'x'.

Factor a trinomial.
(3x + -8y)(2x + 5y) = 0


Subproblem 1
Set the factor '(3x + -8y)' equal to zero and attempt to solve:

Simplifying
3x + -8y = 0

Solving
3x + -8y = 0

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

Add '8y' to each side of the equation.
3x + -8y + 8y = 0 + 8y

Combine like terms: -8y + 8y = 0
3x + 0 = 0 + 8y
3x = 0 + 8y
Remove the zero:
3x = 8y

Divide each side by '3'.
x = 2.666666667y

Simplifying
x = 2.666666667y

Subproblem 2
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
Solution
x = {2.666666667y, -2.5y}

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