(9xy+5)(9xy-5)=

Solution for (9xy+5)(9xy-5)= equation:

Simplifying
(9xy + 5)(9xy + -5) = 0

Reorder the terms:
(5 + 9xy)(9xy + -5) = 0

Reorder the terms:
(5 + 9xy)(-5 + 9xy) = 0

Multiply (5 + 9xy) * (-5 + 9xy)
(5(-5 + 9xy) + 9xy * (-5 + 9xy)) = 0
((-5 * 5 + 9xy * 5) + 9xy * (-5 + 9xy)) = 0
((-25 + 45xy) + 9xy * (-5 + 9xy)) = 0
(-25 + 45xy + (-5 * 9xy + 9xy * 9xy)) = 0
(-25 + 45xy + (-45xy + 81x2y2)) = 0

Combine like terms: 45xy + -45xy = 0
(-25 + 0 + 81x2y2) = 0
(-25 + 81x2y2) = 0

Solving
-25 + 81x2y2 = 0

Solving for variable 'x'.

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

Add '25' to each side of the equation.
-25 + 25 + 81x2y2 = 0 + 25

Combine like terms: -25 + 25 = 0
0 + 81x2y2 = 0 + 25
81x2y2 = 0 + 25

Combine like terms: 0 + 25 = 25
81x2y2 = 25

Divide each side by '81y2'.
x2 = 0.3086419753y-2

Simplifying
x2 = 0.3086419753y-2

Take the square root of each side:
x = {-0.555555556y-1, 0.555555556y-1}