Question

4^61+4^62+4^63+4^64 is x.Find x

Answer 1

It can be written as

4^61 (1 + 4 + 4^2 + 4^3)

= 4^61 (1 + 4 + 16 + 64)

= 4^61(85)

-WonderGirl

Answer 2

$4 {}^{61} + 4 {}^{62} + 4 {}^{63} + {4}^{64} = {4}^{61} \times 10$