x^2+225=(x+3)(x+3)

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Solution for x^2+225=(x+3)(x+3) equation:


Simplifying
x2 + 225 = (x + 3)(x + 3)

Reorder the terms:
225 + x2 = (x + 3)(x + 3)

Reorder the terms:
225 + x2 = (3 + x)(x + 3)

Reorder the terms:
225 + x2 = (3 + x)(3 + x)

Multiply (3 + x) * (3 + x)
225 + x2 = (3(3 + x) + x(3 + x))
225 + x2 = ((3 * 3 + x * 3) + x(3 + x))
225 + x2 = ((9 + 3x) + x(3 + x))
225 + x2 = (9 + 3x + (3 * x + x * x))
225 + x2 = (9 + 3x + (3x + x2))

Combine like terms: 3x + 3x = 6x
225 + x2 = (9 + 6x + x2)

Add '-1x2' to each side of the equation.
225 + x2 + -1x2 = 9 + 6x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
225 + 0 = 9 + 6x + x2 + -1x2
225 = 9 + 6x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
225 = 9 + 6x + 0
225 = 9 + 6x

Solving
225 = 9 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
225 + -6x = 9 + 6x + -6x

Combine like terms: 6x + -6x = 0
225 + -6x = 9 + 0
225 + -6x = 9

Add '-225' to each side of the equation.
225 + -225 + -6x = 9 + -225

Combine like terms: 225 + -225 = 0
0 + -6x = 9 + -225
-6x = 9 + -225

Combine like terms: 9 + -225 = -216
-6x = -216

Divide each side by '-6'.
x = 36

Simplifying
x = 36

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