5. Evaluate the following expression for r = 5.
31² + (2r - 4)

Step-by-step explanation:

Let's solve your equation step-by-step.

r=5.312+2r−4

Step 1: Simplify both sides of the equation.

r=5.312+2r−4

r=28.1961+2r+−4

r=(2r)+(28.1961+−4)(Combine Like Terms)

r=2r+24.1961

r=2r+24.1961

Step 2: Subtract 2r from both sides.

r−2r=2r+24.1961−2r

−r=24.1961

Step 3: Divide both sides by -1.

−r−1=24.1961−1