What Is The Ans Of This Question , ., (W+7)W+3

What is the ans of this question
.
(w+7)w+3

 

Answer: w^2+10w+21

In order to arrive with that answer use the FOIL (First Outer Inner Last) Method

First (w x w) = w^2

Outer (w x 3) = 3w

Inner (7 x w) = 7w

Last (7 x 3) = 21

Then combine these terms: w^2 + 3w + 7w +21

Add the similar terms : 3w + 7w = 101

Then, we arrive with the answer: w^2+10w+21


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