Tính: B = 8(3 ^ 2 + 1)(3 ^ 4 + 1)(3 ^ 8 + 1)(3 ^ 16 + 1) - 3 ^ 32

`color{#fcaaa4}{n}color{#fcaaa4}{h}color{#fcaaa4}{o}color{#c8f7ff}{}color{#c8f7ff}{}color{#c8f7ff}{da}color{#c8f7ff}{u౨ৎ}`

`--------`

` B=8(3^2+1)(3^4+1)(3^8+1)(3^16+1)−3^32`

`(a² + 1)(a⁴ + 1)(a⁸ + 1)(a¹⁶ + 1) = (a³² - 1) / (a² - 1)`

`(3² + 1)(3⁴ + 1)(3⁸ + 1)(3¹⁶ + 1) = (3³² - 1) / (3² - 1) = (3³² - 1) / 8`

`B = 8 × (3³² - 1) / 8 - 3³²`

`B = (3³² - 1) - 3³²`

`B = -1`