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

Toán Lớp 8: x^4 +2x³ + x² = ? Trả lời hộ mình với

Toán Lớp 8: x^4 +2x³ + x² = ?
Trả lời hộ mình với

Comments ( 2 )

  1. $\#phnn$
    x^4+2x^3+x^2
    =x^2(x^2+2x+1)
    =x^2(x^2+2.x.1+1^2)
    =x^2(x+1)^2
    \text{——————————————}
    \text{Áp dụng HĐT:}
    (a+b)^2=a^2+2ab+b^2
     

  2. x^4 +2x^3 + x^2
    = x^2 (x^2 + 2x + 1)
    = x^2(x+1)^2
    =x^2(x+1)(x+1)
     

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

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