Question Simplify the expression 9−630a Evaluate 9−315a×2Solution 9−630a Show Solution Factor the expression 9(1−70a) Evaluate 9−315a×2Multiply the terms 9−630aSolution 9(1−70a) Show Solution Find the roots a=701Alternative Form a=0.01˙42857˙ Evaluate 9−315a×2To find the roots of the expression,set the expression equal to 0 9−315a×2=0Multiply the terms 9−630a=0Move the constant to the right-hand side and change its sign −630a=0−9Removing 0 doesn't change the value,so remove it from the expression −630a=−9Change the signs on both sides of the equation 630a=9Divide both sides 630630a=6309Divide the numbers a=6309Solution a=701Alternative Form a=0.01˙42857˙ Show Solution