If A and B are independent, then
.
a.



b. I'm guessing the ? is supposed to stand for intersection. We can use DeMorgan's law for complements here:



c. DeMorgan's law can be used here too:



5x and -8x are like terms. 6 is not a variable. 5 is the coefficient of the term 5x. X is not the constant.
Answer:
r^42
Step-by-step explanation:
Just multiply the two exponents together:
(r^7)^6 = r^42
Answer: f(x)-g(x)=2x+5
Step by step:
f(x) = 3x+2
g(x) = x-3
f(x)-g(x) = 3x +2 - (x-3) = 3x + 2-x+3=2x+5