a2-25=0

Add 25 to both sides of the equation.

a2=25

Take the square root of both sides of the equation to eliminate the exponent on the left side.

a=±25

Simplify the right side of the equation.

Rewrite 25 as 52.

a=±52

Pull terms out from under the radical, assuming positive real numbers.

a=±5

a=±5

The complete solution is the result of both the positive and negative portions of the solution.

First, use the positive value of the ± to find the first solution.

a=5

Next, use the negative value of the ± to find the second solution.

a=-5

The complete solution is the result of both the positive and negative portions of the solution.

a=5,-5

a=5,-5

a=5,-5

Solve for a a^2-25=0