Question Factor the expression 8(x−21) Evaluate 8x−168Solution 8(x−21) Show Solution Find the roots x=21 Evaluate 8x−168To find the roots of the expression,set the expression equal to 0 8x−168=0Move the constant to the right-hand side and change its sign 8x=0+168Removing 0 doesn't change the value,so remove it from the expression 8x=168Divide both sides 88x=8168Divide the numbers x=8168Solution More Steps Evaluate 8168Reduce the numbers 121Calculate 21 x=21 Show Solution