8n^2+8=400

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Solution for 8n^2+8=400 equation: 


Simplifying
8n2 + 8 = 400

Reorder the terms:
8 + 8n2 = 400

Solving
8 + 8n2 = 400

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 + 8n2 = 400 + -8

Combine like terms: 8 + -8 = 0
0 + 8n2 = 400 + -8
8n2 = 400 + -8

Combine like terms: 400 + -8 = 392
8n2 = 392

Divide each side by '8'.
n2 = 49

Simplifying
n2 = 49

Take the square root of each side:
n = {-7, 7}

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