10a^2+10-20=0

Solution for 10a^2+10-20=0 equation:

Simplifying
10a2 + 10 + -20 = 0

Reorder the terms:
10 + -20 + 10a2 = 0

Combine like terms: 10 + -20 = -10
-10 + 10a2 = 0

Solving
-10 + 10a2 = 0

Solving for variable 'a'.

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

Add '10' to each side of the equation.
-10 + 10 + 10a2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 10a2 = 0 + 10
10a2 = 0 + 10

Combine like terms: 0 + 10 = 10
10a2 = 10

Divide each side by '10'.
a2 = 1

Simplifying
a2 = 1

Take the square root of each side:
a = {-1, 1}