How do you find the product of #(p+3q)(p+3q)#?

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Answer 1 · 2018-04-16T20:46:25

#p^2+ 6pq+ 9q^2#

FOIL

#p(p) = p^2#

#p(3q)=3pq#

Add the two together and you get

#6pq #

Multiply the last two terms and get

#3q(3q) = 9q^2#