4+a^2=25

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Solution for 4+a^2=25 equation: 


Simplifying
4 + a2 = 25

Solving
4 + a2 = 25

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + a2 = 25 + -4

Combine like terms: 4 + -4 = 0
0 + a2 = 25 + -4
a2 = 25 + -4

Combine like terms: 25 + -4 = 21
a2 = 21

Simplifying
a2 = 21

Take the square root of each side:
a = {-4.582575695, 4.582575695}

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