Question

2) Find the following products by using suitable identities. (i)(2x+5)(2x–5)(ii)(x2 +4)(x2 –4

Answer 1

Answer:

(2x+5) (2x-5)

=(2x) ^2-(5) ^2

=4x^2-25

(x^2+4) (x^2-4)

=(x^2) ^2-(4) ^2

=x^4-16

Answer 2

Answer:

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