Answer:
A
Step-by-step explanation:
Substitute x = f(x) into g(x), that is
g(f(x))
= g(3x² - 2x - 1)
= (3x² - 2x - 1)² = (3x² - 2x - 1)(3x² - 2x - 1)
Each term in the second factor is multiplied by each term in the first factor, that is
3x²(3x² - 2x - 1) - 2x(3x² - 2x - 1) - 1(3x² - 2x - 1) ← distribute parenthesis
= 9
- 6x³ - 3x² - 6x³ + 4x² + 2x - 3x² + 2x + 1 ← collect like terms
= 9 - 12x³ - 2x² + 4x + 1 → A
Answer:
The answer is (d) "None of the these alternatives are correct"
Step-by-step explanation:
If two events A and B are independent, the probability of the intersection 
is defined as:
Therefore, in the exercise:
which give (d) "None of the these alternatives are correct"
Answer:
I think it's A.
Step-by-step explanation:
Good luck btw :)
Answer:
yes
Step-by-step explanation:
They are absolutely correct. Good Job
