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

Toán Lớp 8: Khai triển hằng đẳng thức sau: $(x+1)^{2}$ $\text{=0}$

Toán Lớp 8: Khai triển hằng đẳng thức sau:
$(x+1)^{2}$ $\text{=0}$

Comments ( 2 )

  1. (x+1)^2=0
    ⇔x+1=0
    ⇔x=-1
    Vậy x=-1
     

  2. Bạn tham khảo nhé.
    (x+1)^2=0
    <=>x+1=0
    <=>x=-1
    Vậy x=-1
    $\\$
    (x+1)^2
    =x^2+2.x.1+1^2
    =x^2+2x+1

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

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