Question

in the expansion of (x+y)^(15), a certain term contains x^10. what is the exponents of the y in this term

Answer 1

The exponents of x and y add up to n, here n is 15..

\( \color{Black}{\Rightarrow 10 + a = 15 }\)

Solve for a.

Answer 2

total of the exponents will b 15.

Answer 3

do u get t?

Answer 4

good luck :).

Answer 5

\[(x+y)^{15}= \]\[x^{15}+15 x^{14} y+105 x^{13} y^2+455 x^{12} y^3+1365 x^{11} y^4+3003 x^{10} y^5+ . . . \]5