Eric buys two plants. One plant is 4 inches tall and grows 2 of an inch per week. Another plant is 3 inches tall and grows
2 answers:
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- ∆ABD is right angled hence area:-
There is only one option containing 6x^2 i.e Option D.
Hence without calculating further
Option D is correct
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
: