-8x^2=-21

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Solution for -8x^2=-21 equation: 


Simplifying
-8x2 = -21

Solving
-8x2 = -21

Solving for variable 'x'.

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

Divide each side by '-8'.
x2 = 2.625

Simplifying
x2 = 2.625

Take the square root of each side:
x = {-1.620185175, 1.620185175}

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