X^2-3x-9=18-3x

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Solution for X^2-3x-9=18-3x equation:


Simplifying
X2 + -3x + -9 = 18 + -3x

Reorder the terms:
-9 + X2 + -3x = 18 + -3x

Add '3x' to each side of the equation.
-9 + X2 + -3x + 3x = 18 + -3x + 3x

Combine like terms: -3x + 3x = 0
-9 + X2 + 0 = 18 + -3x + 3x
-9 + X2 = 18 + -3x + 3x

Combine like terms: -3x + 3x = 0
-9 + X2 = 18 + 0
-9 + X2 = 18

Solving
-9 + X2 = 18

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 + 9 + X2 = 18 + 9

Combine like terms: -9 + 9 = 0
0 + X2 = 18 + 9
X2 = 18 + 9

Combine like terms: 18 + 9 = 27
X2 = 27

Simplifying
X2 = 27

Take the square root of each side:
X = {-5.196152423, 5.196152423}

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