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junior college 1 | H2 Maths
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abc
Abc

junior college 1 chevron_right H2 Maths chevron_right Singapore

not v sure how to deduce this;
topic: power series

Date Posted: 2 months ago
Views: 22

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Eric Nicholas K
Eric Nicholas K's answer
1242 answers (Tutor Details)
1st
Something like this.

We factorise out the square of a - b go obtain a 1 in the bracket which we will subsequently do a binomial expansion on.

The rest is just simplification.