By the binomial theorem, the
term in the expansion of
is

which suggests that the contribution of the binomial coefficient should make up the remaining factor of 21. That is,

Answer:
four magazines and two books
Step-by-step explanation:
3.50*4= 14
4*2= 8
14+8= 22
Answer:
b. these codes are equal volume
Answer:
It a simultaneous equation so the solution is 2
Step-by-step explanation:
First, solve the parenthesis
Remember to follow PEMDAS, and the left-> right rule
12/3 = 4
4 x 2 = 8
8 + 3 = 11
11 - 7 = 4
Square the remaining number
4² = 4 x 4 = 16
16 is your answer
hope this helps