3x^2-15=16

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Solution for 3x^2-15=16 equation:


Simplifying
3x2 + -15 = 16

Reorder the terms:
-15 + 3x2 = 16

Solving
-15 + 3x2 = 16

Solving for variable 'x'.

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

Add '15' to each side of the equation.
-15 + 15 + 3x2 = 16 + 15

Combine like terms: -15 + 15 = 0
0 + 3x2 = 16 + 15
3x2 = 16 + 15

Combine like terms: 16 + 15 = 31
3x2 = 31

Divide each side by '3'.
x2 = 10.33333333

Simplifying
x2 = 10.33333333

Take the square root of each side:
x = {-3.214550253, 3.214550253}

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