add 2 x⁴ + 5x³ and 6 x⁴ - 7 x³ + 5
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Good luck have a nice day I have sent you 2 pages of explanations so that it is easy for you and also the real answer in the 2nd page it is written but the 1st and the 2nd page I've written the 2 answers this are just off the 2 sums which we have to multiply
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