derick78 derick78

12-07-2020
Mathematics

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(a +2b)2 + 4b² - a²

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henryhuangbc henryhuangbc

12-07-2020

Answer:

a^2+4b^2+2a+4b

Step-by-step explanation:

(a +2b)2 + 4b² - a²

=2a+4b+4b^2+a^2

=a^2+4b^2+2a+4b

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