Question

A+a²+a³+....=2a, then what is the value of a?​

Answer 1

Explanation:

a + a² + a³ + ... = 2a

1 + a + a² + ... = 2 (divide by a, where a could be 0)

Subtract both equations, we have:

-1 = 2a - 2, 2a = 1, a = 0.5.

Hence we have a = 0 or a = 0.5.