Question

A expressão (expressão na foto) é equivalente a:

A) 1
B) 2
C) 3
D) 4
E) 5

Answer 1

15^6.12^4.5^9.6^4
  10^11.3^14.5^4

(3.5)^6.(2².3)^4.5^9.(2.3)^4 ==> 3^6.5^6.2^8.3^4.5^9.2^4.3^4
  (2.5)^11.3^14.5^4                              2^11.5^11.3^14.5^4

2^8.2^4.3^4.3^4.3^6.5^6.5^9 ==> 2^(8+4).3^(4+4+6).5^(6+9)
   2^11.3^14.5^11.5^4                          2^11.3^14.5^(11+4)

2^12.3^14.5^15 ==> 2^(12-11).3^(14-14).5^(15-15)
2^11.3^14.5^15

2^1. 3^0.5^0 ==> 2.1.1 ==> 2      Letra B