2x^2-8+15=0

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Solution for 2x^2-8+15=0 equation:


Simplifying
2x2 + -8 + 15 = 0

Reorder the terms:
-8 + 15 + 2x2 = 0

Combine like terms: -8 + 15 = 7
7 + 2x2 = 0

Solving
7 + 2x2 = 0

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 2x2 = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 2x2 = 0 + -7
2x2 = 0 + -7

Combine like terms: 0 + -7 = -7
2x2 = -7

Divide each side by '2'.
x2 = -3.5

Simplifying
x2 = -3.5

Reorder the terms:
3.5 + x2 = -3.5 + 3.5

Combine like terms: -3.5 + 3.5 = 0.0
3.5 + x2 = 0.0

The solution to this equation could not be determined.

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