Question

1.Quanto é 2⁶+2⁶+2⁶+2⁶₋4⁴ ?
A) 0
B) 2
C) 4
D) 4²
E) 4⁴
2. Sendo n ∈ IΝ, calcule o valor de x = (₋1)⁸ⁿ ₋ (₋1)⁷ⁿ ₋ 2 · (₋1)ⁿ.

Answer 1

Olá!
1)
2^6 + 2^6 + 2^6 + 2^6 - 4^4
(4 . 2^6) - 4^4
(2^2 . 2^6) - [(2^2)^4]
2^8 - 2^8 = 256 - 256 = 0
Alt A

2)
x = (-1)^8n - (-1)^7n - 2 . (-1)^n
x = [(-1^8)^n] - [(-1^7)^n] - 2 . (-1)^n

Obs: 2. (-1)^n = (-1)^n (- 1)^n

x =  1^n + 1^n - 1^n - 1^n = 0

Answer 2

1 )

$</p><p></p><p>\begin{gathered}{4}^{4} = 2 {}^{8} \\ {2}^{6} \times (1 + 1 + 1 + 1 - 2 {}^{2} ) \\ {2}^{6 } \times (4 - 4) \\ {2}^{6} \times 0 \\ 0\end{gathered}44=2826×(1+1+1+1−22)26×(4−4)26×00</p><p></p><p>$