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quynhyspt
2 năm trước
1)so sánh a)1/2√50 và 1/5√200 b)1/3√2 và 1/2√3 2)giải phương trình a)√2x - 3√32x =52 b)3√x-1 + 2√4x-4 - 3√9x-9 +6=0
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