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

Toán Lớp 8: Thực hiện phép tính `a)` `5xy-4y/2x^2y^3` + `3xy+4y/2x^2y^3` `b)` `x+3/x-2` + `4+x/2-x` `c)` `x+1/2x+6` + `2x+3/x^2+3x`

Toán Lớp 8: Thực hiện phép tính
a) 5xy-4y/2x^2y^3 + 3xy+4y/2x^2y^3
b) x+3/x-2 + 4+x/2-x
c) x+1/2x+6 + 2x+3/x^2+3x

Comments ( 1 )

  1. a) 5xy-4{y}/{2}x^2y^3+3xy+4{y}/{2}x^2y^3
    =8xy
    b) x+3/x-2+4+x/2-x
    =6/{2x}+x^2/{2x}+2
    ={6+x^2}/{2x}+{4x}/{2x}
    ={6+x^2+4x}/{2x}
    c) x+1/2x+6+2x+3/x^2+3x
    =6,5x+3/x^2+6
    ={6,5x^3}/x^2+3/x^2+{6x^2}/{x^2}
    ={6,5x^3+3+6x^2}/{x^2}
     

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