Question Factor the expression 21(10−3a) Evaluate 210−63aSolution 21(10−3a) Show Solution Find the roots a=310Alternative Form a=3.3˙ Evaluate 210−63aTo find the roots of the expression,set the expression equal to 0 210−63a=0Move the constant to the right-hand side and change its sign −63a=0−210Removing 0 doesn't change the value,so remove it from the expression −63a=−210Change the signs on both sides of the equation 63a=210Divide both sides 6363a=63210Divide the numbers a=63210Solution a=310Alternative Form a=3.3˙ Show Solution
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