Question 137054
Factor the expression completely. 
9a^4 + 11a^3b + 2a^2b^2

=a^2[9a^2 + 11ab + 2b^2]

=a^2[9a^2 + 9ab + 2ab + 2b^2]

= a^2[(9a(a+b) + 2b(a+b)]

=a^2(a+b)(9a+2b)

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Cheers,
Stan H.