Câu hỏi của Trần Ngọc Anh

Question

Tìm x biết 3x + 3^x+1= 3^8 . 2 + 2 . 3^8. 2017^0

Đoàn Nguyễn · Accepted Answer

$3^x+3^{x+1}=3^8.2+2.3^8.2017^0$$3^x+3^x.3=3^8.2^2$$3^x=3^8.2^2:3$$3^x=3^7.2^2$ Câu trả lời: $3^x+3^{x+1}=3^8.2+2.3^8.2017^0$$3^x+3^x.3=3^8.2^2$$3^x=3^8.2^2:3$$3^x=3^7.2^2$

thảo nguyên nguyễn ngọc · Answer

3x+3x+1=38.2+2.38.201703x+3x+1=38.2+2.38.201703x+3x.3=38.223x+3x.3=38.223x=38.22:33x=38.22:33x=37.223x=37.22 Câu trả lời: 3x+3x+1=38.2+2.38.201703x+3x+1=38.2+2.38.201703x+3x.3=38.223x+3x.3=38.223x=38.22:33x=38.22:33x=37.223x=37.22

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