Explanation for Question 2 From the Math (No Calc) Section on the 2020 October Sat
So question number two is asking us, which of the following answer choices is 2 equivalent to the expression that we're given up here. 3 And so the wording on this one might be a little tricky, but when 4 it asks, which of the following is equivalent, 5 it just means which of the following is equal to. And so all they 6 want you to do here is, uh, simplify the expression that were given earlier 7 on. We can see the first thing that we have here is this plus 8 sign and the parentheses. And so since the parentheses are only separated by a 9 plus and not a minus, we can just rewrite the whole expression, 10 but without the parentheses, which is going to simplify it a little bit and 11 make it easier to solve. 12 Awesome. And so now the next step is to combine like terms. 13 We see that this term has an X, Y squared, 14 and this term also has an X, Y squared. If we do two plus 15 three, we get five. So five X, 16 Y squared is going to be one of the terms in our answer. 17 If we go a little bit further, we see that there's a plus three 18 X, and there's also a minus eight X, 19 and we can combine those as well. So plus three minus eight is negative 20 five. So we have a negative five X. 21 And then finally the last one, we have a minus four and a plus 22 four and minus four plus four is equal to zero. 23 So you want to choose an answer choice that shows us this answer here, 24 and that'll be a.