1.

Expand the following (-9a/2+b)^7

Answer»

SOLUTION :`((-9A)/2+b)^7` = `((-9a)/2)^7+"^7C_1 ((-9a)/2)^(7-1) b^1+^7C_2 ((-9a)/2)^7-2b^2+ .... + b^7`


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