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pantera1 [17]
3 years ago
11

Anyone know how to do this ? I suck at these :(

Mathematics
2 answers:
JulijaS [17]3 years ago
5 0
No not really at all
Allisa [31]3 years ago
3 0
No not really :(((((((((((((((((((
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Anon25 [30]

Answer:

715x^4y^9

Step-by-step explanation:

Given

(x + y)^{13

Required

Determine the 10th term

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So, we have:

(a + b)^n = ^nC_{9}a^{n-9}b^{9

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(x + y)^{13} = \frac{13!}{4!9!}x^4y^9

(x + y)^{13} = \frac{13*12*11*10*9!}{4!9!}x^4y^9

(x + y)^{13} = \frac{13*12*11*10}{4!}x^4y^9

(x + y)^{13} = \frac{13*12*11*10}{4*3*2*1}x^4y^9

(x + y)^{13} = \frac{17160}{24}x^4y^9

(x + y)^{13} = 715x^4y^9

Hence, the 10th term is 715x^4y^9

3 0
3 years ago
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