Expansion
What is the coefficient of the xy3 term in the expansion of (x + 2y)º?
84
168
336
672

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Ответ:

zanaplen27

03.06.2021

Mathematics

Step-by-step explanation:

total no. of questions - 60

percentage of correct answers - 70%

60 = 100%

? = 70%

cross multiply and divide the answer by hundred

$\frac{60 \times 70}{100} \\ \\ \frac{4200}{100} = 42$

answers got correct = 42

therefore answers got incorrect = 60 - 42 = 18

answer = 18

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Expansion What is the coefficient of the xy3 term in the expansion of (x + 2y)º? 84 168 336 672