Explanation for Question 8 From the Math (No Calc) Section on the 2018 March Sat
Question eight says in the complex number system, 2 which of the following is equivalent to the expression above. 3 So what we have to do here is add and subtract like numbers, 4 and then just simplify that. So let's start by adding and subtracting like numbers. 5 So we can rewrite this as three plus four, 6 I plus negative two plus negative three. 7 I, and then when I add that together, 8 I get one plus I, 9 and so we know that our answer is answer choice B one plus.