Find the following products: (x + 4)(x + 7) - Vidyadip

Question

Find the following products: $(x + 4)(x + 7)$

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Answer

Here, we will use the identity $(x + a)(x + b) = x^2+ (a + b)x + ab.$
$(x + 4)(x + 7)$
$ =x^2+(4+7) x+4 \times 7 $
$ =x^2+11 x+28 $

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