-10-2n^2=-21

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Solution for -10-2n^2=-21 equation: 


Simplifying
-10 + -2n2 = -21

Solving
-10 + -2n2 = -21

Solving for variable 'n'.

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

Add '10' to each side of the equation.
-10 + 10 + -2n2 = -21 + 10

Combine like terms: -10 + 10 = 0
0 + -2n2 = -21 + 10
-2n2 = -21 + 10

Combine like terms: -21 + 10 = -11
-2n2 = -11

Divide each side by '-2'.
n2 = 5.5

Simplifying
n2 = 5.5

Take the square root of each side:
n = {-2.34520788, 2.34520788}

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