Question Factor the expression 10(21−251r) Evaluate 210−2510rSolution 10(21−251r) Show Solution Find the roots r=25121Alternative Form r≈0.083665 Evaluate 210−2510rTo find the roots of the expression,set the expression equal to 0 210−2510r=0Move the constant to the right-hand side and change its sign −2510r=0−210Removing 0 doesn't change the value,so remove it from the expression −2510r=−210Change the signs on both sides of the equation 2510r=210Divide both sides 25102510r=2510210Divide the numbers r=2510210Solution r=25121Alternative Form r≈0.083665 Show Solution