Question Simplify the expression r−81r2 Evaluate r−r2×81Solution r−81r2 Show Solution Factor the expression r(1−81r) Evaluate r−r2×81Use the commutative property to reorder the terms r−81r2Rewrite the expression r−r×81rSolution r(1−81r) Show Solution Find the roots r1=0,r2=811Alternative Form r1=0,r2≈0.012346 Evaluate r−r2×81To find the roots of the expression,set the expression equal to 0 r−r2×81=0Use the commutative property to reorder the terms r−81r2=0Factor the expression More Steps Evaluate r−81r2Rewrite the expression r−r×81rFactor out r from the expression r(1−81r) r(1−81r)=0When the product of factors equals 0,at least one factor is 0 r=01−81r=0Solve the equation for r More Steps Evaluate 1−81r=0Move the constant to the right-hand side and change its sign −81r=0−1Removing 0 doesn't change the value,so remove it from the expression −81r=−1Change the signs on both sides of the equation 81r=1Divide both sides 8181r=811Divide the numbers r=811 r=0r=811Solution r1=0,r2=811Alternative Form r1=0,r2≈0.012346 Show Solution