2x^2-21+40=0

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Solution for 2x^2-21+40=0 equation:


Simplifying
2x2 + -21 + 40 = 0

Reorder the terms:
-21 + 40 + 2x2 = 0

Combine like terms: -21 + 40 = 19
19 + 2x2 = 0

Solving
19 + 2x2 = 0

Solving for variable 'x'.

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

Add '-19' to each side of the equation.
19 + -19 + 2x2 = 0 + -19

Combine like terms: 19 + -19 = 0
0 + 2x2 = 0 + -19
2x2 = 0 + -19

Combine like terms: 0 + -19 = -19
2x2 = -19

Divide each side by '2'.
x2 = -9.5

Simplifying
x2 = -9.5

Reorder the terms:
9.5 + x2 = -9.5 + 9.5

Combine like terms: -9.5 + 9.5 = 0.0
9.5 + x2 = 0.0

The solution to this equation could not be determined.

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