Question Factor the expression 2(5r−391) Evaluate 10r−782Solution 2(5r−391) Show Solution Find the roots r=5391Alternative Form r=78.2 Evaluate 10r−782To find the roots of the expression,set the expression equal to 0 10r−782=0Move the constant to the right-hand side and change its sign 10r=0+782Removing 0 doesn't change the value,so remove it from the expression 10r=782Divide both sides 1010r=10782Divide the numbers r=10782Solution r=5391Alternative Form r=78.2 Show Solution