12+(x^2-2)=22

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Solution for 12+(x^2-2)=22 equation: 


Simplifying
12 + (x2 + -2) = 22

Reorder the terms:
12 + (-2 + x2) = 22

Remove parenthesis around (-2 + x2)
12 + -2 + x2 = 22

Combine like terms: 12 + -2 = 10
10 + x2 = 22

Solving
10 + x2 = 22

Solving for variable 'x'.

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

Add '-10' to each side of the equation.
10 + -10 + x2 = 22 + -10

Combine like terms: 10 + -10 = 0
0 + x2 = 22 + -10
x2 = 22 + -10

Combine like terms: 22 + -10 = 12
x2 = 12

Simplifying
x2 = 12

Take the square root of each side:
x = {-3.464101615, 3.464101615}

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