9+x^2=16

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Solution for 9+x^2=16 equation: 


Simplifying
9 + x2 = 16

Solving
9 + x2 = 16

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + x2 = 16 + -9

Combine like terms: 9 + -9 = 0
0 + x2 = 16 + -9
x2 = 16 + -9

Combine like terms: 16 + -9 = 7
x2 = 7

Simplifying
x2 = 7

Take the square root of each side:
x = {-2.645751311, 2.645751311}

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