x(x+3)=x^2+9

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Solution for x(x+3)=x^2+9 equation:


Simplifying
x(x + 3) = x2 + 9

Reorder the terms:
x(3 + x) = x2 + 9
(3 * x + x * x) = x2 + 9
(3x + x2) = x2 + 9

Reorder the terms:
3x + x2 = 9 + x2

Add '-1x2' to each side of the equation.
3x + x2 + -1x2 = 9 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
3x + 0 = 9 + x2 + -1x2
3x = 9 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
3x = 9 + 0
3x = 9

Solving
3x = 9

Solving for variable 'x'.

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

Divide each side by '3'.
x = 3

Simplifying
x = 3

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