Question Factor the expression 21(51−2c) Evaluate 251−cSolution 21(51−2c) Show Solution Find the roots c=251Alternative Form c=25.5 Evaluate 251−cTo find the roots of the expression,set the expression equal to 0 251−c=0Move the constant to the right-hand side and change its sign −c=0−251Removing 0 doesn't change the value,so remove it from the expression −c=−251Solution c=251Alternative Form c=25.5 Show Solution