225+x^2=x^2+12x+36

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Solution for 225+x^2=x^2+12x+36 equation:


Simplifying
225 + x2 = x2 + 12x + 36

Reorder the terms:
225 + x2 = 36 + 12x + x2

Add '-1x2' to each side of the equation.
225 + x2 + -1x2 = 36 + 12x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
225 + 0 = 36 + 12x + x2 + -1x2
225 = 36 + 12x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
225 = 36 + 12x + 0
225 = 36 + 12x

Solving
225 = 36 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
225 + -12x = 36 + 12x + -12x

Combine like terms: 12x + -12x = 0
225 + -12x = 36 + 0
225 + -12x = 36

Add '-225' to each side of the equation.
225 + -225 + -12x = 36 + -225

Combine like terms: 225 + -225 = 0
0 + -12x = 36 + -225
-12x = 36 + -225

Combine like terms: 36 + -225 = -189
-12x = -189

Divide each side by '-12'.
x = 15.75

Simplifying
x = 15.75

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