Question Factor the expression 3(x−21) Evaluate 3x−63Solution 3(x−21) Show Solution Find the roots x=21 Evaluate 3x−63To find the roots of the expression,set the expression equal to 0 3x−63=0Move the constant to the right-hand side and change its sign 3x=0+63Removing 0 doesn't change the value,so remove it from the expression 3x=63Divide both sides 33x=363Divide the numbers x=363Solution More Steps Evaluate 363Reduce the numbers 121Calculate 21 x=21 Show Solution