Explanation for Question 2 From the Math (No Calc) Section on the 2019 April Sat
For number two, we want to know which of the following polynomials is equivalent 2 to the expression above for this one, 3 the way the question is written, they tried to throw you off by including 4 the parentheses there and making you think you're going to have to foil out 5 the two polynomials, but you don't. You're just adding them. 6 If it had been a subtraction sign, there you'd have to distribute it through. 7 But since we are just adding, I'm just going to rewrite it without the 8 parentheses. So two X plus six plus X squared, 9 plus two X plus one. And now we're just going to combine like 10 terms. So the X squared can't combine with anything. 11 Since it's the only one, then we have a two X and a two 12 X that gives us four X and then we have six plus one gives 13 you seven. So the answer is D X squared plus four X plus 14 seven.