Question Find the roots d=109Alternative Form d=0.9 Evaluate 10d−9To find the roots of the expression,set the expression equal to 0 10d−9=0Move the constant to the right-hand side and change its sign 10d=0+9Removing 0 doesn't change the value,so remove it from the expression 10d=9Divide both sides 1010d=109Solution d=109Alternative Form d=0.9 Show Solution