(5x-4)(4x-9)=y

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Solution for (5x-4)(4x-9)=y equation: 


Simplifying
(5x + -4)(4x + -9) = y

Reorder the terms:
(-4 + 5x)(4x + -9) = y

Reorder the terms:
(-4 + 5x)(-9 + 4x) = y

Multiply (-4 + 5x) * (-9 + 4x)
(-4(-9 + 4x) + 5x * (-9 + 4x)) = y
((-9 * -4 + 4x * -4) + 5x * (-9 + 4x)) = y
((36 + -16x) + 5x * (-9 + 4x)) = y
(36 + -16x + (-9 * 5x + 4x * 5x)) = y
(36 + -16x + (-45x + 20x2)) = y

Combine like terms: -16x + -45x = -61x
(36 + -61x + 20x2) = y

Solving
36 + -61x + 20x2 = y

Solving for variable 'x'.

Combine like terms: y + -1y = 0
36 + -61x + 20x2 + -1y = 0

The solution to this equation could not be determined.

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