20a^2-5=

Solution for 20a^2-5= equation:

Simplifying
20a2 + -5 = 0

Reorder the terms:
-5 + 20a2 = 0

Solving
-5 + 20a2 = 0

Solving for variable 'a'.

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

Add '5' to each side of the equation.
-5 + 5 + 20a2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + 20a2 = 0 + 5
20a2 = 0 + 5

Combine like terms: 0 + 5 = 5
20a2 = 5

Divide each side by '20'.
a2 = 0.25

Simplifying
a2 = 0.25

Take the square root of each side:
a = {-0.5, 0.5}