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huonglnk2000
2 năm trước
1) Thực hiện phép tính (hợp lí nếu có): a) 2^3.17-2^3.19 b) 87.3^3+64.76-23.3^3 2) Tìm x thuộc N, biết: a) (2x-1)^5=7^5 b) 4^x-3+15=79 c) 3^x-1=2^4. 5 Giúp mik vs! Cảm ơn các bạn nhiều!
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