Tìm: a) \(\sqrt {911} \) b) \(\sqrt {988} \)
a) \(\sqrt {911} = \sqrt {9,11} \times \sqrt {100} = 3,018 \times 10 = 30,18\)
b) \(\sqrt {988} = \sqrt {9,88} \times \sqrt {100} = 3,143 \times 10 = 31,43\)
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