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

Toán Lớp 8: Rút gọn: ($x^{2}$ + 1)$^{2}$ – 4($x^{2}$ + x) – 12

Toán Lớp 8: Rút gọn: ($x^{2}$ + 1)$^{2}$ – 4($x^{2}$ + x) – 12

Comments ( 2 )

  1. (x^2+1)^2-4(x^2+x)-12
    =(x^2)^2+2*x^2*1+1^2-4x^2-4x-12
    =x^4+2x^2+1-4x^2-4x-12
    =x^4-2x^2-4x-11
    Chúc bạn học tốt, cho mình câu trả lời hay nhất + 5* + cám ơn nha!!!

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