Question

Find the product using identities (x+1)(x+2)

Answer 1

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$(x + 1)(x + 2) \\ {x}^{2} + (1 + 2)x + 2 \\ {x}^{2} + 3x + 2$

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Answer 2

Hi friends here is your answer :-

In (x+1)(x+2) there is an identity that is :-

(x + a)(x + b) = x^2 + (a + b) x + ab

Now :-

(x+1)(x+2) = x^2 + (1+2)x + 2

               = x^2 + 3x + 2

Therefore, x^2 + 3x + 2 is the answer

HOPE IT HELPED YOU..............