-0.9(x+9)(x-2)=y

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Solution for -0.9(x+9)(x-2)=y equation: 


Simplifying
-0.9(x + 9)(x + -2) = y

Reorder the terms:
-0.9(9 + x)(x + -2) = y

Reorder the terms:
-0.9(9 + x)(-2 + x) = y

Multiply (9 + x) * (-2 + x)
-0.9(9(-2 + x) + x(-2 + x)) = y
-0.9((-2 * 9 + x * 9) + x(-2 + x)) = y
-0.9((-18 + 9x) + x(-2 + x)) = y
-0.9(-18 + 9x + (-2 * x + x * x)) = y
-0.9(-18 + 9x + (-2x + x2)) = y

Combine like terms: 9x + -2x = 7x
-0.9(-18 + 7x + x2) = y
(-18 * -0.9 + 7x * -0.9 + x2 * -0.9) = y
(16.2 + -6.3x + -0.9x2) = y

Solving
16.2 + -6.3x + -0.9x2 = y

Solving for variable 'x'.

Combine like terms: y + -1y = 0
16.2 + -6.3x + -0.9x2 + -1y = 0

The solution to this equation could not be determined.

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