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

Toán Lớp 8: (9x+1)^2+(5-x)(5+x)-(26+18x) Thực hiện phép tính

Toán Lớp 8: (9x+1)^2+(5-x)(5+x)-(26+18x) Thực hiện phép tính

Comments ( 2 )

  1. (9x+1)^2+(5-x)(5+x)-(26+18x)
    81x^2+18x+1+25-x^2-26-18x
    80x^2
    Cho mk xin hay nhất please
    Thank you

  2. $\text{(9x+1$)^{2}$ +(5-x)(5+x)-(26+18x)}$
    $\text{=81$x^{2}$ +18x+1+25-$x^{2}$ -26-18x}$
    $\text{=80$x^{2}$ +0}$
    $\text{=80$x^{2}$ }$
    #Zie

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

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