Answer:
7a. 7b=49ab
Step-by-step explanation:
Answer:

Step-by-step explanation:
Sample space is a set of possible outcomes of a random experiment.
A random experiment is an experiment whose outcomes can not be predicted.
Number of red balls = 6
Number of green ball = 1
Number of blue ball = 1
Let R denotes red ball, B denotes blue ball and G denotes green ball.
Sample space = 
complex roots occur in conjugate pairs
given 2 - 3√5 is a root then 2 + 3√5 is also a root
one of the other roots is 2 + 3√5
there are 2 roots of - 4
one of the other roots could be another - 4
Answer:
B
Step-by-step explanation: