10n^2-40=0

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Solution for 10n^2-40=0 equation: 


Simplifying
10n2 + -40 = 0

Reorder the terms:
-40 + 10n2 = 0

Solving
-40 + 10n2 = 0

Solving for variable 'n'.

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

Add '40' to each side of the equation.
-40 + 40 + 10n2 = 0 + 40

Combine like terms: -40 + 40 = 0
0 + 10n2 = 0 + 40
10n2 = 0 + 40

Combine like terms: 0 + 40 = 40
10n2 = 40

Divide each side by '10'.
n2 = 4

Simplifying
n2 = 4

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

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