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miule397
2 năm trước
a) (x+1)^3 = -125 b) 3^4-x = 27 c) (x+1,5)^8 +(2,7-y)^10 = 0 d) 3^-1. 4^x = 5/3.2^7 e) 9^-x . 27^x = 243
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