a^2+a^2=400

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Solution for a^2+a^2=400 equation: 


Simplifying
a2 + a2 = 400

Combine like terms: a2 + a2 = 2a2
2a2 = 400

Solving
2a2 = 400

Solving for variable 'a'.

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

Divide each side by '2'.
a2 = 200

Simplifying
a2 = 200

Take the square root of each side:
a = {-14.142135624, 14.142135624}

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