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lamtrinhan
2 năm trước
Khử mẫu biểu thức lấy căn $\sqrt{\frac{7}{64}}$ ; $\sqrt{\frac{3}{75}}$; $\sqrt{\frac{32}{176^2-112^2} }$; $\sqrt{\frac{149^2-76^2}{457^2-384^2}}$ ; $\sqrt{\frac{a^3b}{b^4} }$
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