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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 9: Rút gọn biểu thức: (2√125-3√5-√180):(-√5)+√8

Toán Lớp 9: Rút gọn biểu thức:
(2√125-3√5-√180):(-√5)+√8

Comments ( 2 )

  1. $\text{#Táo vàng}$
    (2\sqrt{125} – 3\sqrt{5} – \sqrt{180}) : (-\sqrt{5}) + \sqrt{8}
    = (2\sqrt{125} – 3\sqrt{5} – 6\sqrt{5}) : (-\sqrt{5}) + \sqrt{8}
    = (7\sqrt{5} – 6\sqrt{5}) : (-\sqrt{5}) + \sqrt{8}
    = \sqrt{5} : (-\sqrt{5) + \sqrt{8}
    = -1 + \sqrt{8}
    = -1 + 2\sqrt{2}

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222-9+11+12:2*14+14 = ? ( )

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