A^2+21a-72=

Solution for A^2+21a-72= equation:

Simplifying
A2 + 21a + -72 = 0

Reorder the terms:
-72 + A2 + 21a = 0

Solving
-72 + A2 + 21a = 0

Solving for variable 'A'.

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

Add '72' to each side of the equation.
-72 + A2 + 72 + 21a = 0 + 72

Reorder the terms:
-72 + 72 + A2 + 21a = 0 + 72

Combine like terms: -72 + 72 = 0
0 + A2 + 21a = 0 + 72
A2 + 21a = 0 + 72

Combine like terms: 0 + 72 = 72
A2 + 21a = 72

Add '-21a' to each side of the equation.
A2 + 21a + -21a = 72 + -21a

Combine like terms: 21a + -21a = 0
A2 + 0 = 72 + -21a
A2 = 72 + -21a

Simplifying
A2 = 72 + -21a

Reorder the terms:
-72 + A2 + 21a = 72 + -21a + -72 + 21a

Reorder the terms:
-72 + A2 + 21a = 72 + -72 + -21a + 21a

Combine like terms: 72 + -72 = 0
-72 + A2 + 21a = 0 + -21a + 21a
-72 + A2 + 21a = -21a + 21a

Combine like terms: -21a + 21a = 0
-72 + A2 + 21a = 0

The solution to this equation could not be determined.