(xy-2)(xy+4)=

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Solution for (xy-2)(xy+4)= equation:


Simplifying
(xy + -2)(xy + 4) = 0

Reorder the terms:
(-2 + xy)(xy + 4) = 0

Reorder the terms:
(-2 + xy)(4 + xy) = 0

Multiply (-2 + xy) * (4 + xy)
(-2(4 + xy) + xy(4 + xy)) = 0
((4 * -2 + xy * -2) + xy(4 + xy)) = 0
((-8 + -2xy) + xy(4 + xy)) = 0
(-8 + -2xy + (4 * xy + xy * xy)) = 0
(-8 + -2xy + (4xy + x2y2)) = 0

Combine like terms: -2xy + 4xy = 2xy
(-8 + 2xy + x2y2) = 0

Solving
-8 + 2xy + x2y2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-4 + -1xy)(2 + -1xy) = 0

Subproblem 1

Set the factor '(-4 + -1xy)' equal to zero and attempt to solve: Simplifying -4 + -1xy = 0 Solving -4 + -1xy = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1xy = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1xy = 0 + 4 -1xy = 0 + 4 Combine like terms: 0 + 4 = 4 -1xy = 4 Divide each side by '-1y'. x = -4y-1 Simplifying x = -4y-1

Subproblem 2

Set the factor '(2 + -1xy)' equal to zero and attempt to solve: Simplifying 2 + -1xy = 0 Solving 2 + -1xy = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1xy = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1xy = 0 + -2 -1xy = 0 + -2 Combine like terms: 0 + -2 = -2 -1xy = -2 Divide each side by '-1y'. x = 2y-1 Simplifying x = 2y-1

Solution

x = {-4y-1, 2y-1}

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