(5x-7y)(5x+7y)=0

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Solution for (5x-7y)(5x+7y)=0 equation:


Simplifying
(5x + -7y)(5x + 7y) = 0

Multiply (5x + -7y) * (5x + 7y)
(5x * (5x + 7y) + -7y * (5x + 7y)) = 0
((5x * 5x + 7y * 5x) + -7y * (5x + 7y)) = 0

Reorder the terms:
((35xy + 25x2) + -7y * (5x + 7y)) = 0
((35xy + 25x2) + -7y * (5x + 7y)) = 0
(35xy + 25x2 + (5x * -7y + 7y * -7y)) = 0
(35xy + 25x2 + (-35xy + -49y2)) = 0

Reorder the terms:
(35xy + -35xy + 25x2 + -49y2) = 0

Combine like terms: 35xy + -35xy = 0
(0 + 25x2 + -49y2) = 0
(25x2 + -49y2) = 0

Solving
25x2 + -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.
25x2 + -49y2 + 49y2 = 0 + 49y2

Combine like terms: -49y2 + 49y2 = 0
25x2 + 0 = 0 + 49y2
25x2 = 0 + 49y2
Remove the zero:
25x2 = 49y2

Divide each side by '25'.
x2 = 1.96y2

Simplifying
x2 = 1.96y2

Take the square root of each side:
x = {-1.4y, 1.4y}

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