Question

pls answer this question as soon as possible friends​

Answer 1

hello there brainly user!

I'm only in class 8, so I don't know most of them. Sorry for that.

but the answer to question:

3. option b

the identity applied is (a-b)(a+b) = a²-b²

4. option a

$( \sqrt{2} + \sqrt{3})( \sqrt{2} - \sqrt{3})$

=

$\sqrt{2}^{2} - \sqrt{3}^{2}$

= 2-3 = (-1)

i hope this helps!!

have a great day!!

Answer 2

Answer:

option a is the answer

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