Question Simplify the expression 7r2−6020r Evaluate 7r2−43r×140Solution 7r2−6020r Show Solution Factor the expression 7r(r−860) Evaluate 7r2−43r×140Multiply the terms 7r2−6020rRewrite the expression 7r×r−7r×860Solution 7r(r−860) Show Solution Find the roots r1=0,r2=860 Evaluate 7r2−43r×140To find the roots of the expression,set the expression equal to 0 7r2−43r×140=0Multiply the terms 7r2−6020r=0Factor the expression More Steps Evaluate 7r2−6020rRewrite the expression 7r×r−7r×860Factor out 7r from the expression 7r(r−860) 7r(r−860)=0When the product of factors equals 0,at least one factor is 0 7r=0r−860=0Solve the equation for r r=0r−860=0Solve the equation for r More Steps Evaluate r−860=0Move the constant to the right-hand side and change its sign r=0+860Removing 0 doesn't change the value,so remove it from the expression r=860 r=0r=860Solution r1=0,r2=860 Show Solution