(8-9x)x=-40+(6-3x)(6+3x)

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Solution for (8-9x)x=-40+(6-3x)(6+3x) equation:


Simplifying
(8 + -9x) * x = -40 + (6 + -3x)(6 + 3x)

Reorder the terms for easier multiplication:
x(8 + -9x) = -40 + (6 + -3x)(6 + 3x)
(8 * x + -9x * x) = -40 + (6 + -3x)(6 + 3x)
(8x + -9x2) = -40 + (6 + -3x)(6 + 3x)

Multiply (6 + -3x) * (6 + 3x)
8x + -9x2 = -40 + (6(6 + 3x) + -3x * (6 + 3x))
8x + -9x2 = -40 + ((6 * 6 + 3x * 6) + -3x * (6 + 3x))
8x + -9x2 = -40 + ((36 + 18x) + -3x * (6 + 3x))
8x + -9x2 = -40 + (36 + 18x + (6 * -3x + 3x * -3x))
8x + -9x2 = -40 + (36 + 18x + (-18x + -9x2))

Combine like terms: 18x + -18x = 0
8x + -9x2 = -40 + (36 + 0 + -9x2)
8x + -9x2 = -40 + (36 + -9x2)

Combine like terms: -40 + 36 = -4
8x + -9x2 = -4 + -9x2

Add '9x2' to each side of the equation.
8x + -9x2 + 9x2 = -4 + -9x2 + 9x2

Combine like terms: -9x2 + 9x2 = 0
8x + 0 = -4 + -9x2 + 9x2
8x = -4 + -9x2 + 9x2

Combine like terms: -9x2 + 9x2 = 0
8x = -4 + 0
8x = -4

Solving
8x = -4

Solving for variable 'x'.

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

Divide each side by '8'.
x = -0.5

Simplifying
x = -0.5

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