marmarvalparaiso marmarvalparaiso

26-04-2021
Mathematics

contestada

Area = ???????????????

Area class=

Respuesta :

12376963 12376963

26-04-2021

Answer:

x^2+10x+21

Step-by-step explanation:

Blue box: x*x=x^2

Green box: x*3=3x

Purple box: 7*x=7x

Orange box: 7*3=21

x^2+(3x+7x)+21

Combine like term

A: x^2+10x+21

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