5=-0.04*x^2-86

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Solution for 5=-0.04*x^2-86 equation:


Simplifying
5 = -0.04x2 + -86

Reorder the terms:
5 = -86 + -0.04x2

Solving
5 = -86 + -0.04x2

Solving for variable 'x'.

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

Add '0.04x2' to each side of the equation.
5 + 0.04x2 = -86 + -0.04x2 + 0.04x2

Combine like terms: -0.04x2 + 0.04x2 = 0.00
5 + 0.04x2 = -86 + 0.00
5 + 0.04x2 = -86

Add '-5' to each side of the equation.
5 + -5 + 0.04x2 = -86 + -5

Combine like terms: 5 + -5 = 0
0 + 0.04x2 = -86 + -5
0.04x2 = -86 + -5

Combine like terms: -86 + -5 = -91
0.04x2 = -91

Divide each side by '0.04'.
x2 = -2275

Simplifying
x2 = -2275

Reorder the terms:
2275 + x2 = -2275 + 2275

Combine like terms: -2275 + 2275 = 0
2275 + x2 = 0

The solution to this equation could not be determined.

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