(7y-8x)(7y+8x)=

Solution for (7y-8x)(7y+8x)= equation:

Simplifying
(7y + -8x)(7y + 8x) = 0

Reorder the terms:
(-8x + 7y)(7y + 8x) = 0

Reorder the terms:
(-8x + 7y)(8x + 7y) = 0

Multiply (-8x + 7y) * (8x + 7y)
(-8x * (8x + 7y) + 7y * (8x + 7y)) = 0
((8x * -8x + 7y * -8x) + 7y * (8x + 7y)) = 0

Reorder the terms:
((-56xy + -64x2) + 7y * (8x + 7y)) = 0
((-56xy + -64x2) + 7y * (8x + 7y)) = 0
(-56xy + -64x2 + (8x * 7y + 7y * 7y)) = 0
(-56xy + -64x2 + (56xy + 49y2)) = 0

Reorder the terms:
(-56xy + 56xy + -64x2 + 49y2) = 0

Combine like terms: -56xy + 56xy = 0
(0 + -64x2 + 49y2) = 0
(-64x2 + 49y2) = 0

Solving
-64x2 + 49y2 = 0

Solving for variable 'x'.

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

Add '-49y2' to each side of the equation.
-64x2 + 49y2 + -49y2 = 0 + -49y2

Combine like terms: 49y2 + -49y2 = 0
-64x2 + 0 = 0 + -49y2
-64x2 = 0 + -49y2
Remove the zero:
-64x2 = -49y2

Divide each side by '-64'.
x2 = 0.765625y2

Simplifying
x2 = 0.765625y2

Take the square root of each side:
x = {-0.875y, 0.875y}