Question

Quanto é a metade de 2 elevado a 21 mais 4 elevado a 12?

Answer 1

$2^{21}+ 4^{12}/2$

$2^{21} + 2^{24} /2$

$2^{21}(1+ 2^{3})/2$

$2^{20}(1+ 2^{3})$

$2^{20} + 8 2^{10}. 2^{10} + 8 1024.1024+8 1048576 + 8 = 1048584$

Answer 2

(2/2)²¹ + 4¹² =
= 1²¹ + 4¹² =
= 1 + 16.777.216 =
= 16.777.217



4¹² = 4 . 4 . 4 . 4 . 4 . 4 . 4 . 4 . 4 . 4 . 4 . 4
4¹² = 16 . 16 . 16 . 16 . 16 . 16
4¹² = 256 . 256 . 256
4¹² = 16.777.216