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What is the coefficient of x5,5 in the expansion of (x + y) 10?
O A. 1
O B. 5
O C. 252
O
D. It does not exist.
SUBM

Respuesta :

Chelboy

Answer:C

Step-by-step explanation:

(x+y)^10=x^10+10x^9y+45x^8y^2+120x^7y^3+210x^6y^4+252x^5y^5+210x^4y^6+120x^3y^7+45x^2y^8+10xy^9+y^10

Therefore they coefficient of x^5y^5 is 252

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