X-9+x+x(x-2)=720

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Solution for X-9+x+x(x-2)=720 equation:


Simplifying
X + -9 + x + x(x + -2) = 720

Reorder the terms:
X + -9 + x + x(-2 + x) = 720
X + -9 + x + (-2 * x + x * x) = 720
X + -9 + x + (-2x + x2) = 720

Reorder the terms:
-9 + X + x + -2x + x2 = 720

Combine like terms: x + -2x = -1x
-9 + X + -1x + x2 = 720

Solving
-9 + X + -1x + x2 = 720

Solving for variable 'X'.

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

Add '9' to each side of the equation.
-9 + X + -1x + 9 + x2 = 720 + 9

Reorder the terms:
-9 + 9 + X + -1x + x2 = 720 + 9

Combine like terms: -9 + 9 = 0
0 + X + -1x + x2 = 720 + 9
X + -1x + x2 = 720 + 9

Combine like terms: 720 + 9 = 729
X + -1x + x2 = 729

Add 'x' to each side of the equation.
X + -1x + x + x2 = 729 + x

Combine like terms: -1x + x = 0
X + 0 + x2 = 729 + x
X + x2 = 729 + x

Add '-1x2' to each side of the equation.
X + x2 + -1x2 = 729 + x + -1x2

Combine like terms: x2 + -1x2 = 0
X + 0 = 729 + x + -1x2
X = 729 + x + -1x2

Simplifying
X = 729 + x + -1x2

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