5a^2-40=0

Solution for 5a^2-40=0 equation:

Simplifying
5a2 + -40 = 0

Reorder the terms:
-40 + 5a2 = 0

Solving
-40 + 5a2 = 0

Solving for variable 'a'.

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

Add '40' to each side of the equation.
-40 + 40 + 5a2 = 0 + 40

Combine like terms: -40 + 40 = 0
0 + 5a2 = 0 + 40
5a2 = 0 + 40

Combine like terms: 0 + 40 = 40
5a2 = 40

Divide each side by '5'.
a2 = 8

Simplifying
a2 = 8

Take the square root of each side:
a = {-2.828427125, 2.828427125}