5x^2-4=-40

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Solution for 5x^2-4=-40 equation:


Simplifying
5x2 + -4 = -40

Reorder the terms:
-4 + 5x2 = -40

Solving
-4 + 5x2 = -40

Solving for variable 'x'.

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

Add '4' to each side of the equation.
-4 + 4 + 5x2 = -40 + 4

Combine like terms: -4 + 4 = 0
0 + 5x2 = -40 + 4
5x2 = -40 + 4

Combine like terms: -40 + 4 = -36
5x2 = -36

Divide each side by '5'.
x2 = -7.2

Simplifying
x2 = -7.2

Reorder the terms:
7.2 + x2 = -7.2 + 7.2

Combine like terms: -7.2 + 7.2 = 0.0
7.2 + x2 = 0.0

The solution to this equation could not be determined.

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