20+a^2=25

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Solution for 20+a^2=25 equation: 


Simplifying
20 + a2 = 25

Solving
20 + a2 = 25

Solving for variable 'a'.

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

Add '-20' to each side of the equation.
20 + -20 + a2 = 25 + -20

Combine like terms: 20 + -20 = 0
0 + a2 = 25 + -20
a2 = 25 + -20

Combine like terms: 25 + -20 = 5
a2 = 5

Simplifying
a2 = 5

Take the square root of each side:
a = {-2.236067978, 2.236067978}

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