Question Simplify the expression 18a−84120 Evaluate 18a−84120−0Solution 18a−84120 Show Solution Factor the expression 6(3a−14020) Evaluate 18a−84120−0Removing 0 doesn't change the value,so remove it from the expression 18a−84120Solution 6(3a−14020) Show Solution Find the roots a=314020Alternative Form a=4673.3˙ Evaluate 18a−84120−0To find the roots of the expression,set the expression equal to 0 18a−84120−0=0Removing 0 doesn't change the value,so remove it from the expression 18a−84120=0Move the constant to the right-hand side and change its sign 18a=0+84120Removing 0 doesn't change the value,so remove it from the expression 18a=84120Divide both sides 1818a=1884120Divide the numbers a=1884120Solution a=314020Alternative Form a=4673.3˙ Show Solution