Answer:4 ways to make a code of 4 letters. 6C4=15, 4!=24, and 15×24=360
hope i helped
Step-by-step explanation:
It is hard to see the picture.
Answer:

Step-by-step explanation:
Using the Foil method
you multiply x times x and get
Then you multiply -4 times X and get -4x
Then you multiply -3 times X and get -3x
then you add -4 and -3 together and get -7x
Lastly you multiply -4 and -3 and get 12
And there you have it

Negative times negative is positive.
Positive times positive is positive.
Negative times positive is negative.
(-3.8)(-5.7) gives you a positive product then it is + times (-1.4) which gives you a negative product.