Thread: arithematic progressions.

find 'd' if sum of first 'm' term is 'xm^2+ym'?

Hello, anjana!

What a strange problem . . .

Find if sum of first terms is: .

The sum of the first terms is: .
. . where is the first term and is the common difference.

So we have: .
. . which equals: .


Two polynomials are equal if their corresponding coefficients are equal.

. . Hence, we have: .

Without additional information, that's the best we can do.