Explanation for Question 2 From the Math (No Calc) Section on the 2018 May Sat
Question two says which of the following expressions is equivalent to three Q squared 2 plus R to the third plus five R minus eight Q plus two 3 times Q squared, plus R. So the, 4 find the answer to this, we're going to have to add and subtract like 5 terms. So we have three Q squared plus R 6 Q plus five R minus eight, 7 Q plus two times Q squared, 8 which is two Q squared plus two R. 9 So the similar terms here, the light terms are three Q squared into Q 10 squared, which become five Q squared. 11 And then are to the third arm. 12 Sorry, not are to the third five R and two are, 13 which added together equal seven R and everything else is a distinct 14 term. So I'm just going to rewrite it as it was in the line 15 above. And this should be our final answer. 16 And so you can see the correct answer here is five Q squared plus 17 seven R plus R to the third plus negative eight Q, 18 which is answer choice D.