(x-3y)(x+3y)=36

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Solution for (x-3y)(x+3y)=36 equation:


Simplifying
(x + -3y)(x + 3y) = 36

Multiply (x + -3y) * (x + 3y)
(x(x + 3y) + -3y * (x + 3y)) = 36
((x * x + 3y * x) + -3y * (x + 3y)) = 36

Reorder the terms:
((3xy + x2) + -3y * (x + 3y)) = 36
((3xy + x2) + -3y * (x + 3y)) = 36
(3xy + x2 + (x * -3y + 3y * -3y)) = 36
(3xy + x2 + (-3xy + -9y2)) = 36

Reorder the terms:
(3xy + -3xy + x2 + -9y2) = 36

Combine like terms: 3xy + -3xy = 0
(0 + x2 + -9y2) = 36
(x2 + -9y2) = 36

Solving
x2 + -9y2 = 36

Solving for variable 'x'.

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

Add '9y2' to each side of the equation.
x2 + -9y2 + 9y2 = 36 + 9y2

Combine like terms: -9y2 + 9y2 = 0
x2 + 0 = 36 + 9y2
x2 = 36 + 9y2

Simplifying
x2 = 36 + 9y2

Reorder the terms:
-36 + x2 + -9y2 = 36 + 9y2 + -36 + -9y2

Reorder the terms:
-36 + x2 + -9y2 = 36 + -36 + 9y2 + -9y2

Combine like terms: 36 + -36 = 0
-36 + x2 + -9y2 = 0 + 9y2 + -9y2
-36 + x2 + -9y2 = 9y2 + -9y2

Combine like terms: 9y2 + -9y2 = 0
-36 + x2 + -9y2 = 0

The solution to this equation could not be determined.

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