Coefficient of y^15x^2 in expansion of (y^3+x)^7

Mathematics

2 answers:

Hitman42 [59]3 years ago

7 0

The coefficient of y∧15×∧2 in expansion of (y∧3+x)∧7 is (15×2)+(3×7)= 51

Bess [88]3 years ago

4 0

Hello,

$(x+y^{3})^7 =
$
$x^7+7x^{6}y^{3}+21x^{5}y^{6}+35x^{4}y^{9}+35x^{3}y^{12}+21x^{2}y^{15}+7xy^{18}+y^{21}\\
$

Coefficient=21=2P7=7*6/2!

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4 0

3 years ago

Question 2:

Helga [31]

Answer:

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Step-by-step explanation:

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