Question Find the roots d=21143Alternative Form d=6.8˙09523˙ Evaluate 143−21dTo find the roots of the expression,set the expression equal to 0 143−21d=0Move the constant to the right-hand side and change its sign −21d=0−143Removing 0 doesn't change the value,so remove it from the expression −21d=−143Change the signs on both sides of the equation 21d=143Divide both sides 2121d=21143Solution d=21143Alternative Form d=6.8˙09523˙ Show Solution