Question

Algebra 2 Questions:
1. Which of the following statements is true? The 2 in (A) and (D) is supposed to be i squared.
(A) i2=-1
(B) √-5=i√5
(C) √-4=2i
(D) -7•i2=7
(E) All the above
(F) None of the above

2. Which is true about the complex number a+bi?
(A) a and b are both real
(B) a is real and b is imaginary
(C) a is imaginary and b is real
(D) a and b are both imaginary
(E) all of the above
(F) none of the above

Answer 1

The answer to 1 is (E) All of the above. This is because a negative cannot be under a square root and it comes out as an i. 

The answer to 2 is (B) a is real and b is imaginary. This is because anything that has an "i" attached to it is considered imaginary.