1.

If 3rd, 4th, 5th and 6th terms in the expansion of (x+α)n be respectively a,b,c and d. prove that b2−acc2−bd=5a3c.

Answer»

If 3rd, 4th, 5th and 6th terms in the expansion of (x+α)n be respectively a,b,c and d. prove that b2acc2bd=5a3c.



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