r2=0.36+0.64

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

r=±0.36+0.64

Simplify the right side of the equation.

Add 0.36 and 0.64.

r=±1

Rewrite 1 as 12.

r=±12

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

r=±1

r=±1

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.

r=1

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

r=-1

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

r=1,-1

r=1,-1

r=1,-1

Solve for r r^2=0.36+0.64