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tranghuyen123dang
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1, Giải phương trình sau: (2x+3)(x-5) = 4x² + 6x 2, Tìm giá trị của m sao cho phương trình: a, 12 - 2(1-x)² = 4(x-m) - (x-3)(2x+5) có nghiệm x=3 b, (9x+1)(x-2m) = (3x+2)(3x-5) có nghiệm x=1
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