Question Simplify the expression 21Alternative Form 0.5 Evaluate 21r×r1Rewrite the expression 2r×r1Cancel out the common factor r 21×1Solution 21Alternative Form 0.5 Show Solution Find the excluded values r=0 Evaluate 21r×r1Solution r=0 Show Solution Find the roots r∈∅ Evaluate 21r×r1To find the roots of the expression,set the expression equal to 0 21r×r1=0Find the domain 21r×r1=0,r=0Calculate 21r×r1=0Multiply the terms More Steps Multiply the terms 21r×r1Rewrite the expression 2r×r1Cancel out the common factor r 21×1Multiply the terms 21 21=0Multiply both sides of the equation by LCD 21×2=0×2Simplify the equation 1=0×2Any expression multiplied by 0 equals 0 1=0Solution r∈∅ Show Solution