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what is the polynomial answer of this (a+3)(a+3)

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HuInDWorldviz
Using FOIL method:
[tex]F = a^{2} \\ O = 3a \\ I = 3a \\ L = 9 \\ O + I = 6a \\ = a^{2} + 6a + 9[/tex]
Rodriguezmina94viz
[tex] a^{2}+6a+9 [/tex]