21x^2+22xy-8y^2=0

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Solution for 21x^2+22xy-8y^2=0 equation:


Simplifying
21x2 + 22xy + -8y2 = 0

Reorder the terms:
22xy + 21x2 + -8y2 = 0

Solving
22xy + 21x2 + -8y2 = 0

Solving for variable 'x'.

Factor a trinomial.
(7x + -2y)(3x + 4y) = 0

Subproblem 1

Set the factor '(7x + -2y)' equal to zero and attempt to solve: Simplifying 7x + -2y = 0 Solving 7x + -2y = 0 Move all terms containing x to the left, all other terms to the right. Add '2y' to each side of the equation. 7x + -2y + 2y = 0 + 2y Combine like terms: -2y + 2y = 0 7x + 0 = 0 + 2y 7x = 0 + 2y Remove the zero: 7x = 2y Divide each side by '7'. x = 0.2857142857y Simplifying x = 0.2857142857y

Subproblem 2

Set the factor '(3x + 4y)' equal to zero and attempt to solve: Simplifying 3x + 4y = 0 Solving 3x + 4y = 0 Move all terms containing x to the left, all other terms to the right. Add '-4y' to each side of the equation. 3x + 4y + -4y = 0 + -4y Combine like terms: 4y + -4y = 0 3x + 0 = 0 + -4y 3x = 0 + -4y Remove the zero: 3x = -4y Divide each side by '3'. x = -1.333333333y Simplifying x = -1.333333333y

Solution

x = {0.2857142857y, -1.333333333y}

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