Mathematics, 22.07.2021 14:00 AleOfficial101

Cho ba số thực thỏa mãn a^2= b^2 + bc và b^2= c^2 + ac
chứng minh rằng 1/c=1/a+1/b

Answers: 2

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Cho ba số thực thỏa mãn a^2= b^2 + bc và b^2= c^2 + ac
chứng minh rằng 1/c=1/a+1/b...