sclay2021 sclay2021

29-08-2020
Mathematics

contestada

Use the binomial theorem to expand the binomial (x + -2y)8.
x8 + 8x6y + 28x7y2 + 56x5y4 + 70x5y4 + 56x3y7 + 28x2y +
8xy + y 8
x8 + 8x7y + 28x6y2 + 56xy3 + 70x4y4 + 56x3y5 + 28x2y6 +
8xy7 + y8
x8 + 16x7y + 112x6y2 + 448x5y3 + 1,120x4y4 +
1,792x3y5 + 1,792x2y6 + 1,024xy7+ 256y8
256x8 + 1,024x7y + 1,792x6y2 + 1,792x5y3 + 1,120x4y4 +
448x3y5 + 112x2y6 + 16xy7 + y8

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29-08-2020

Answer:

256x8y8256+2x8y8+56x3y7+28x7y2+126x5y4+x8+1048x7y+1932x6y2+2240x5y3+2310x4y4+2296x3y5+1932x2y6+1048xy7+y8+8x6y+56xy3+28x2y+8xy

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