KenzlyD662211 KenzlyD662211

28-10-2022
Mathematics

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simplify. final answer should be written in standard form (a+b)(3a-b)(2a+7b)

Respuesta :

PerrisC489989 PerrisC489989

28-10-2022

we have

(a+b)(3a-b)(2a+7b)

step 1

Solve

apply distributive property

(a+b)(3a-b)=3a^2-ab-3ab-b^2=3a^2-4ab-b^2

step 2

Multiply (3a^2-4ab-b^2) by (2a+7b)

6a^3+21a^2b-8a^2b-28ab^2-2ab^2-7b^3=6a^3+13a^2b-30ab^2-7b^3

answer is

6a^3+13a^2b-30ab^2-7b^3

Answer Link

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