8-7n^2=-20

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Solution for 8-7n^2=-20 equation: 


Simplifying
8 + -7n2 = -20

Solving
8 + -7n2 = -20

Solving for variable 'n'.

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

Add '-8' to each side of the equation.
8 + -8 + -7n2 = -20 + -8

Combine like terms: 8 + -8 = 0
0 + -7n2 = -20 + -8
-7n2 = -20 + -8

Combine like terms: -20 + -8 = -28
-7n2 = -28

Divide each side by '-7'.
n2 = 4

Simplifying
n2 = 4

Take the square root of each side:
n = {-2, 2}

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