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

Toán Lớp 9: (2√6 -4√3 +5√2 -1/4√8 ).3√6 lm nhanh giúp em vs mn ơi

Toán Lớp 9: (2√6 -4√3 +5√2 -1/4√8 ).3√6
lm nhanh giúp em vs mn ơi

Comments ( 2 )

  1. #AkShi
    (2\sqrt{6}-4\sqrt{3}+5\sqrt{2}-1/4\sqrt{8}).3\sqrt{6}
    =2\sqrt{6}.3\sqrt{6}-4\sqrt{3}.3\sqrt{6}+5\sqrt{2}.3\sqrt{6}-1/4\sqrt{8}.3\sqrt{6}
    =[2.3(\sqrt{6}.\sqrt{6})]+[-4.3(\sqrt{3}.\sqrt{6})]+[5.3.(\sqrt{22.6})]+[-1/4.3(\sqrt{8.6})]
    =36-12\sqrt{18}+15\sqrt{12}-3/4\sqrt{48}
    =36-12\sqrt{9.2}+15\sqrt{4.3}-3/4\sqrt{16.3}
    =36-12\sqrt{3^2*2}+15\sqrt{2^2*3}-3/4\sqrt{4^2*3}
    =36-36\sqrt{2}+30\sqrt{3}-3\sqrt{3}
    =36-36\sqrt{2}+27\sqrt{3}
     

  2. Đáp án:
     
    Giải thích các bước giải:
     

    toan-lop-9-2-6-4-3-5-2-1-4-8-3-6-lm-nhanh-giup-em-vs-mn-oi

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