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

Toán Lớp 9: Thực hiện phép tính : 5√12 – 2√48 – 4√75 + 3√27

Toán Lớp 9: Thực hiện phép tính :
5√12 – 2√48 – 4√75 + 3√27

Comments ( 1 )

  1. Giải đáp:
    5\sqrt{12} – 2\sqrt{48} – 4\sqrt{75} + 3\sqrt{27}
    =5.2\sqrt{3} – 2.4\sqrt{3} – 4.5\sqrt{3} +3.3\sqrt{3}
    = 10\sqrt{3} – 8\sqrt{3} – 20\sqrt{3} + 9\sqrt{3}
    = -9\sqrt{3}

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