What Is The Formula Of This , (W+7) (W+3)

What is the formula of this , (w+7) (w+3)

 

Answer:

=w²+10w+21

Step-by-step explanation:

(w+7)(w+3)

=(w)(w)+(w)(3)+(7)(w)+(7)(3)

=w²+3w+7w+21

=w²+10w+21

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