(x^2-1)(x^2+7) should be your answer
Answer:
0.9855 or 98.55%.
Step-by-step explanation:
The probability of each individual match being flawed is p = 0.008. The probability that a matchbox will have one or fewer matches with a flaw is the same as the probability of a matchbox having exactly one or exactly zero matches with a flaw:

The probability that a matchbox will have one or fewer matches with a flaw is 0.9855 or 98.55%.
A standard Deck of cards has 52 cards. there are 4 5s because there are 4 kinds of cards (spades, hearts, diamonds, clubs). therefore, the theoretical probability of choosing a 5 is 4/52 or 1/13
Subtract them to get 3.31
You're answers are correcy