Question

Find the product of ( 9a - 7b + 6c +5d) and (2a + b).

Answer 1

Answer:

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Answer 2

(9a - 7b + 6c + 5d)(2a+b)
= (18a^2 - 14ab + 12ac + 10ad)+(9ab - 7b^2 + 6bc + 5bd)
= 18a^2-5ab+12ac+10ad -7b^2+6bc+5bd

You can simply the answer further by taking c and d common
Hopefully this helped