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TS EAMCET 18-July-2022 Shift 1 Solved Paper

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Question : 18

Total: 160

If L and M are respectively the coefficient of x−7 in (ax+‌

)11 and the coefficient of x7 in (bx2+‌

)11 then L+M=

‌
1
b
[ coefficient of x−6in(ax+‌
b
x2
)12]
‌
1
a
[ coefficient of x6in(ax2+‌
b
x
)12]
a[coefficient‌of‌x−10‌i‌n(ax+‌
b
x2
)11]
b[ coefficient of x4in(ax2+‌
b
x
)11]

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