AMC12 2021 A
AMC12 2021 A · Q1
AMC12 2021 A · Q1. It mainly tests Exponents & radicals, Fractions.
What is the value of\[2^{1+2+3}-(2^1+2^2+2^3)?\]
求\[2^{1+2+3}-(2^1+2^2+2^3)\]的值。
(A)
0
0
(B)
50
50
(C)
52
52
(D)
54
54
(E)
57
57
Answer
Correct choice: (B)
正确答案:(B)
Solution
We evaluate the given expression to get that \[2^{1+2+3}-(2^1+2^2+2^3)=2^6-(2^1+2^2+2^3)=64-2-4-8=50 \implies \boxed{\text{(B)}}\]
我们计算给定的表达式,得\[2^{1+2+3}-(2^1+2^2+2^3)=2^6-(2^1+2^2+2^3)=64-2-4-8=50 \implies \boxed{\text{(B)}}\]
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