If x is greater than 1 find the sum of infinity of x(squared)/x-1;x;(x-1).... And also the value of x for the given series (replace(;) with (add sign) please help

What's all this nonsense with ;;;? Just use + signs!

If you mean the sum of

x^2 / ((x-1)+x+(x+1))

that's kind of weird, since it boils down to

x^2/3x = x/3

Naturally, the sum will be infinity.

And what do you mean "find the value of x"? We are adding up all the x stuff.

I think this question has been mangled.