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balato911
2 năm trước
chứng minh đẳng thức 1) ✓21-6√6 +✓9+2√18 -2✓6 +3√3 =0 2) ✓4/(2-√5)^2 - ✓4/(2+√5)^2 =8 3) (3+√5) (√10 - √2) ✓3-√5 =8
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