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

Toán Lớp 9: Tính a) √17- 3√32 + √17+3 √32

Toán Lớp 9: Tính
a) √17- 3√32 + √17+3 √32

Comments ( 2 )

  1. a) \sqrt{17} – 3\sqrt{32} + \sqrt{17} + 3\sqrt{32}
    = (\sqrt{17} + \sqrt{17}) – (3\sqrt{32} – 3\sqrt{32})
    = 2\sqrt{17} – 0 = 2\sqrt{17}

  2. @tandung154
    a) \sqrt{17} – 3\sqrt{32} + \sqrt{17} + 3\sqrt{32}
    = (\sqrt{17} + \sqrt{17}) – (3\sqrt{32} – 3\sqrt{32})
    = 2\sqrt{17} – 0
    = 2\sqrt{17}
    * Xin hay nhất

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