Xavier worked 10 hours on Monday and 15 hours on Wednesday his total pay was $280 what was his rate per hour
2 answers:
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Recall the binomial theorem.
1. The binomial expansion of is
Observe that
When we multiply these by ,
• and
combine to make
• and
combine to make
and the sum of these terms is
2. The binomial expansion is
We get the term when
:
