Question Simplify the expression r2−4r Evaluate (r×1)(r−4)Remove the parentheses r×1×(r−4)Multiply the terms r(r−4)Apply the distributive property r×r−r×4Multiply the terms r2−r×4Solution r2−4r Show Solution Find the roots r1=0,r2=4 Evaluate (r×1)(r−4)To find the roots of the expression,set the expression equal to 0 (r×1)(r−4)=0Any expression multiplied by 1 remains the same r(r−4)=0Separate the equation into 2 possible cases r=0r−4=0Solve the equation More Steps Evaluate r−4=0Move the constant to the right-hand side and change its sign r=0+4Removing 0 doesn't change the value,so remove it from the expression r=4 r=0r=4Solution r1=0,r2=4 Show Solution
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