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

Toán Lớp 7: 20^50 x 49^25 / 14^49 x (-25)^26

Toán Lớp 7: 20^50 x 49^25 / 14^49 x (-25)^26

Comments ( 2 )

  1. {20^{50} . 49^{25}}/{14^{49} . (-25)^{26}}
    = {(2^{2} . 5)^{50} . (7^{2})^{25}}/{(2.7)^{49} . (-5^{2})^{26}}
    = {2^{100} . 5^{50} . 7^{50}}/{2^{49} . 7^{49} . 5^{52}}
    = {2^{51} . 1 . 7}/{1 . 1 . 5^{2}}
    = 2^{51}/5^{2}

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

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