3x^2+21+18=0

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Solution for 3x^2+21+18=0 equation:


Simplifying
3x2 + 21 + 18 = 0

Reorder the terms:
21 + 18 + 3x2 = 0

Combine like terms: 21 + 18 = 39
39 + 3x2 = 0

Solving
39 + 3x2 = 0

Solving for variable 'x'.

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

Add '-39' to each side of the equation.
39 + -39 + 3x2 = 0 + -39

Combine like terms: 39 + -39 = 0
0 + 3x2 = 0 + -39
3x2 = 0 + -39

Combine like terms: 0 + -39 = -39
3x2 = -39

Divide each side by '3'.
x2 = -13

Simplifying
x2 = -13

Reorder the terms:
13 + x2 = -13 + 13

Combine like terms: -13 + 13 = 0
13 + x2 = 0

The solution to this equation could not be determined.

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