Mathematics, 24.07.2021 15:50 yoongnzl
Cho x, y là các số nguyên dương thoả mãn: (x+y)^2+6x+2y+4 là 1 số chính phương. Chứng minh rằng: x=y
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Cho x, y là các số nguyên dương thoả mãn: (x+y)^2+6x+2y+4 là 1 số chính phương. Chứng minh rằng: x=y...
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