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
