8x(x+1)-9x=2x(2x-5)+4(x^2+9)

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Solution for 8x(x+1)-9x=2x(2x-5)+4(x^2+9) equation:


Simplifying
8x(x + 1) + -9x = 2x(2x + -5) + 4(x2 + 9)

Reorder the terms:
8x(1 + x) + -9x = 2x(2x + -5) + 4(x2 + 9)
(1 * 8x + x * 8x) + -9x = 2x(2x + -5) + 4(x2 + 9)
(8x + 8x2) + -9x = 2x(2x + -5) + 4(x2 + 9)

Reorder the terms:
8x + -9x + 8x2 = 2x(2x + -5) + 4(x2 + 9)

Combine like terms: 8x + -9x = -1x
-1x + 8x2 = 2x(2x + -5) + 4(x2 + 9)

Reorder the terms:
-1x + 8x2 = 2x(-5 + 2x) + 4(x2 + 9)
-1x + 8x2 = (-5 * 2x + 2x * 2x) + 4(x2 + 9)
-1x + 8x2 = (-10x + 4x2) + 4(x2 + 9)

Reorder the terms:
-1x + 8x2 = -10x + 4x2 + 4(9 + x2)
-1x + 8x2 = -10x + 4x2 + (9 * 4 + x2 * 4)
-1x + 8x2 = -10x + 4x2 + (36 + 4x2)

Reorder the terms:
-1x + 8x2 = 36 + -10x + 4x2 + 4x2

Combine like terms: 4x2 + 4x2 = 8x2
-1x + 8x2 = 36 + -10x + 8x2

Add '-8x2' to each side of the equation.
-1x + 8x2 + -8x2 = 36 + -10x + 8x2 + -8x2

Combine like terms: 8x2 + -8x2 = 0
-1x + 0 = 36 + -10x + 8x2 + -8x2
-1x = 36 + -10x + 8x2 + -8x2

Combine like terms: 8x2 + -8x2 = 0
-1x = 36 + -10x + 0
-1x = 36 + -10x

Solving
-1x = 36 + -10x

Solving for variable 'x'.

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

Add '10x' to each side of the equation.
-1x + 10x = 36 + -10x + 10x

Combine like terms: -1x + 10x = 9x
9x = 36 + -10x + 10x

Combine like terms: -10x + 10x = 0
9x = 36 + 0
9x = 36

Divide each side by '9'.
x = 4

Simplifying
x = 4

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