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

Toán Lớp 9: √8+2√10+2√5 – √8-2√10+2√5 Giúp mik vs

Toán Lớp 9: √8+2√10+2√5 – √8-2√10+2√5
Giúp mik vs

Comments ( 2 )

  1. Giải đáp:
    √8 +2√10+2√5-√8-2√10+2√5
    =(√8-√8)+(2√10-2√10)+(2√5+2√5)
    =2√5+2√5=4√5
     
    Lời giải và giải thích chi tiết:
     

  2. \sqrt{8}+2\sqrt{10}+2\sqrt{5}-\sqrt{8}-2\sqrt{10}+2\sqrt{5}
    =(\sqrt{8}-\sqrt{8})+(2\sqrt{10}-2\sqrt{10})+(2\sqrt{5}+2\sqrt{5})
    =0+0+4\sqrt{5}
    =4\sqrt{5}.

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