(4x-5)*(5x+7)=y

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Solution for (4x-5)*(5x+7)=y equation: 


Simplifying
(4x + -5)(5x + 7) = y

Reorder the terms:
(-5 + 4x)(5x + 7) = y

Reorder the terms:
(-5 + 4x)(7 + 5x) = y

Multiply (-5 + 4x) * (7 + 5x)
(-5(7 + 5x) + 4x * (7 + 5x)) = y
((7 * -5 + 5x * -5) + 4x * (7 + 5x)) = y
((-35 + -25x) + 4x * (7 + 5x)) = y
(-35 + -25x + (7 * 4x + 5x * 4x)) = y
(-35 + -25x + (28x + 20x2)) = y

Combine like terms: -25x + 28x = 3x
(-35 + 3x + 20x2) = y

Solving
-35 + 3x + 20x2 = y

Solving for variable 'x'.

Combine like terms: y + -1y = 0
-35 + 3x + 20x2 + -1y = 0

The solution to this equation could not be determined.

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