Question

evaluate the using indentity a) (a-0.1) (a+0.1)​

Answer 1

Identity = (a+b)(a-b)

So, a-0.1 * a+ 0.1
= a^2 - (0.1) ^2
= a^2 - 0.01

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Answer 2

Answer:

It is an identity

(a-b)(a+)=a^2+b^2

So,

(a+0.1)(a+0.1)=(a)^2+(0.1)^2

=a^2+0.01

Hope it helps you