x*x+7=x+3*x+3

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Solution for x*x+7=x+3*x+3 equation: 


Simplifying
x * x + 7 = x + 3x + 3

Multiply x * x
x2 + 7 = x + 3x + 3

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

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

Combine like terms: x + 3x = 4x
7 + x2 = 3 + 4x

Solving
7 + x2 = 3 + 4x

Solving for variable 'x'.

Reorder the terms:
7 + -3 + -4x + x2 = 3 + 4x + -3 + -4x

Combine like terms: 7 + -3 = 4
4 + -4x + x2 = 3 + 4x + -3 + -4x

Reorder the terms:
4 + -4x + x2 = 3 + -3 + 4x + -4x

Combine like terms: 3 + -3 = 0
4 + -4x + x2 = 0 + 4x + -4x
4 + -4x + x2 = 4x + -4x

Combine like terms: 4x + -4x = 0
4 + -4x + x2 = 0

Factor a trinomial.
(2 + -1x)(2 + -1x) = 0


Subproblem 1
Set the factor '(2 + -1x)' equal to zero and attempt to solve:

Simplifying
2 + -1x = 0

Solving
2 + -1x = 0

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

Add '-2' to each side of the equation.
2 + -2 + -1x = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -1x = 0 + -2
-1x = 0 + -2

Combine like terms: 0 + -2 = -2
-1x = -2

Divide each side by '-1'.
x = 2

Simplifying
x = 2

Subproblem 2
Set the factor '(2 + -1x)' equal to zero and attempt to solve:

Simplifying
2 + -1x = 0

Solving
2 + -1x = 0

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

Add '-2' to each side of the equation.
2 + -2 + -1x = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -1x = 0 + -2
-1x = 0 + -2

Combine like terms: 0 + -2 = -2
-1x = -2

Divide each side by '-1'.
x = 2

Simplifying
x = 2
Solution
x = {2, 2}

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