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 = 61
61 + 2x2 = 0

Solving
61 + 2x2 = 0

Solving for variable 'x'.

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

Add '-61' to each side of the equation.
61 + -61 + 2x2 = 0 + -61

Combine like terms: 61 + -61 = 0
0 + 2x2 = 0 + -61
2x2 = 0 + -61

Combine like terms: 0 + -61 = -61
2x2 = -61

Divide each side by '2'.
x2 = -30.5

Simplifying
x2 = -30.5

Reorder the terms:
30.5 + x2 = -30.5 + 30.5

Combine like terms: -30.5 + 30.5 = 0.0
30.5 + x2 = 0.0

The solution to this equation could not be determined.

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