a^2+400=625

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Solution for a^2+400=625 equation: 


Simplifying
a2 + 400 = 625

Reorder the terms:
400 + a2 = 625

Solving
400 + a2 = 625

Solving for variable 'a'.

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

Add '-400' to each side of the equation.
400 + -400 + a2 = 625 + -400

Combine like terms: 400 + -400 = 0
0 + a2 = 625 + -400
a2 = 625 + -400

Combine like terms: 625 + -400 = 225
a2 = 225

Simplifying
a2 = 225

Take the square root of each side:
a = {-15, 15}

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