Đáp án`+`Giải thích các bước giải:

`25¹⁰ . (1/5)²⁰ + (-3/4)⁸ . (-4/3)⁸ - 2011⁰`

`= 5²⁰ . 1/5²⁰ + 3⁸/4⁸ . 4⁸/3⁸ - 1`

`= 5²⁰/5²⁰ +` $\dfrac{3⁸ . 4⁸}{4⁸ . 3⁸}$ - 1`

`= 1 + 1 - 1`

`= 1`

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{\text{a}}$$\color{#8c4ebd}{\text{t}}$$\color{#B592D6}
{\text{h}}$$\color{#ceaedf}{\text{s}}$