Mathematics, 24.09.2019 02:20 queentynaisa

Which of the following is the expansion of (2m - n)7?
128m7 + 448m6n + 672m5n2 + 560m4n3 + 280m3n4 + 84m2n5 + 14mn6 + n7
128m7 + 14m6n + 42m5n2 + 70m4n3 + 70m3n4 + 42m2n5 + 14mn6 + n7
m7 + 7m6n + 21m5n2 + 35m4n3 + 35m3n4 + 21m2n5 + 7mn6 + n7
128m7 - 384m6n + 480m5n2 - 320m4n3 + 160m3n4 - 60m2n5 + 12mn6 - n7
128m7 - 448m6n + 672m5n2 - 560m4n3 + 280m3n4 - 84m2n5 + 14mn6 - n7

Answers: 3

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Which of the following is the expansion of (2m - n)7?
128m7 + 448m6n + 672m5n2 + 560m4n3 + 2...

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