3=16-2X^2

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Solution for 3=16-2X^2 equation: 


Simplifying
3 = 16 + -2X2

Solving
3 = 16 + -2X2

Solving for variable 'X'.

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

Add '2X2' to each side of the equation.
3 + 2X2 = 16 + -2X2 + 2X2

Combine like terms: -2X2 + 2X2 = 0
3 + 2X2 = 16 + 0
3 + 2X2 = 16

Add '-3' to each side of the equation.
3 + -3 + 2X2 = 16 + -3

Combine like terms: 3 + -3 = 0
0 + 2X2 = 16 + -3
2X2 = 16 + -3

Combine like terms: 16 + -3 = 13
2X2 = 13

Divide each side by '2'.
X2 = 6.5

Simplifying
X2 = 6.5

Take the square root of each side:
X = {-2.549509757, 2.549509757}

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