Explanation for Question 14 From the Math (No Calc) Section on the 2019 May Sat
So question 14 says in the complex number system, 2 what is the value of the given expression? 3 And the expression is I squared plus negative square. 4 Now the question tells us that I is equal to root negative one. 5 So we're going to need that to do our calculations since a root negative 6 one squared is equal to negative one. 7 We know that I squared is equal to negative one. 8 So first we're just going to plug that in for, 9 I squared. So negative one, plus then we have negative I, 10 which is negative root, negative one square, 11 and that square just also equals negative one. 12 So we get negative one plus negative one and that's equal to negative 13 two. So the answer here is a.