a*a+16=25

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Solution for a*a+16=25 equation: 


Simplifying
a * a + 16 = 25

Multiply a * a
a2 + 16 = 25

Reorder the terms:
16 + a2 = 25

Solving
16 + a2 = 25

Solving for variable 'a'.

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

Add '-16' to each side of the equation.
16 + -16 + a2 = 25 + -16

Combine like terms: 16 + -16 = 0
0 + a2 = 25 + -16
a2 = 25 + -16

Combine like terms: 25 + -16 = 9
a2 = 9

Simplifying
a2 = 9

Take the square root of each side:
a = {-3, 3}

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