Answer:
(4a+7)(4a-7)
Step-by-step explanation:
For this example, we must combine not permutate; this because a salad in which you first use apple then tomato is the same as the one in which you use first tomato then apple, so order does not matter.
Me must do "10 combine 7" which is written by the binomial coefficient

; in general a binomial coefficient is written by:

In which

and

are positive integers, such that

.
So, for this problem:
Hence, there are 120 different ways to make the fruit salad.
Answer:
i dont speak spanish sry
Step-by-step explanation:
but if you put it in english i would help
Answer:48
Step-by-step explanation: