The answer is D, because the others can be solved. A when factored is equal to -3, when B is factored it is equal to 3,-1, when C is factored it is 1,-4. D can be solved but you will only get irrational numbers which can't be used.
Answer:
b
Step-by-step explanation:
The real roots are 3 and -3.
Imaginary roots:-
x - (2 - i) = 0
x = 2 -i is one imaginary root and the other is 2 + i
Answer:
7.6923%
Step-by-step explanation:
Let y% be the percent of 520.
520y = 40
y = 0.076923...
y = 7.6923%
PLOT:
-2, 0.022
-1, 0.067
0, 0.2
1, 0.6
2, 1.8
