8x^2-19=-81

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Solution for 8x^2-19=-81 equation:


Simplifying
8x2 + -19 = -81

Reorder the terms:
-19 + 8x2 = -81

Solving
-19 + 8x2 = -81

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 + 8x2 = -81 + 19

Combine like terms: -19 + 19 = 0
0 + 8x2 = -81 + 19
8x2 = -81 + 19

Combine like terms: -81 + 19 = -62
8x2 = -62

Divide each side by '8'.
x2 = -7.75

Simplifying
x2 = -7.75

Reorder the terms:
7.75 + x2 = -7.75 + 7.75

Combine like terms: -7.75 + 7.75 = 0.00
7.75 + x2 = 0.00

The solution to this equation could not be determined.

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