3x^2+8=16

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Solution for 3x^2+8=16 equation: 


Simplifying
3x2 + 8 = 16

Reorder the terms:
8 + 3x2 = 16

Solving
8 + 3x2 = 16

Solving for variable 'x'.

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

Add '-8' to each side of the equation.
8 + -8 + 3x2 = 16 + -8

Combine like terms: 8 + -8 = 0
0 + 3x2 = 16 + -8
3x2 = 16 + -8

Combine like terms: 16 + -8 = 8
3x2 = 8

Divide each side by '3'.
x2 = 2.666666667

Simplifying
x2 = 2.666666667

Take the square root of each side:
x = {-1.632993162, 1.632993162}

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