a*a-3=27

Solution for a*a-3=27 equation:

Simplifying
a * a + -3 = 27

Multiply a * a
a2 + -3 = 27

Reorder the terms:
-3 + a2 = 27

Solving
-3 + a2 = 27

Solving for variable 'a'.

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

Add '3' to each side of the equation.
-3 + 3 + a2 = 27 + 3

Combine like terms: -3 + 3 = 0
0 + a2 = 27 + 3
a2 = 27 + 3

Combine like terms: 27 + 3 = 30
a2 = 30

Simplifying
a2 = 30

Take the square root of each side:
a = {-5.477225575, 5.477225575}