Mrs. douglas wanted to give each of her students 3 fancy pencils. she has 20 students. if fancy pencils come in packs of 12, how many packs does she need to purchase so that all of her students get their pencils?

10a^3+277a^2-132a-792

step-by-step explanation:

(2a+11)(5a-12)(foil)

=10a^2-24a+55a-132 =10a^2+31a-132

(10a^2+31a-132)(a+6)

=10a^3+60a^2+31a^2+186a^2-132a-792 =10a^3+277a^2-132a-792

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