Toán Lớp 9: giải pt :
a) x^2 – (\sqrt{2} + 1) . x + \sqrt{2} = 0
b) x^2 – (2 – \sqrt{3}) . x – 2\sqrt{3} = 0
c) x^2 – (\sqrt{2} – 1) . x – \sqrt{2} = 0
d) x^2 – (\sqrt{3} + \sqrt{2}) . x + \sqrt{6} = 0
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Toán Lớp 9: giải pt :
a) x^2 – (\sqrt{2} + 1) . x + \sqrt{2} = 0
b) x^2 – (2 – \sqrt{3}) . x – 2\sqrt{3} = 0
c) x^2 – (\sqrt{2} – 1) . x – \sqrt{2} = 0
d) x^2 – (\sqrt{3} + \sqrt{2}) . x + \sqrt{6} = 0
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