Question 389849
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Hi
(3a^2b + 2ab^2)^2 
(3a^2b + 2ab^2)(3a^2b + 2ab^2)
 9a^4b^2 + 6a^3b^3 + 6a^3b^3 + 4a^2b^4
 9a^4b^2 + 12a^3b^3 + 4a^2b^4