Rút gọn biểu thức sau

To find the sum of the series A, we can use the formula for the sum of a geometric series:

S = a(1 - r^n) / (1 - r)

In this case, the first term (a) is x^2 and the common ratio (r) is x^2. The number of terms (n) is 100.

Plugging these values into the formula, we get:

S = x^2(1 - (x^2)^100) / (1 - x^2)

Simplifying further, we have:

S = x^2(1 - x^200) / (1 - x^2)

Therefore, the sum of the series A is x^2(1 - x^200) / (1 - x^2).