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

Toán Lớp 8: PTĐTTNT: ( $x^{2}$ + 2x $^){2}$ + 3 ( $x^{2}$ + 2x ) + 2

Home/ Toán Lớp 8: PTĐTTNT: ( $x^{2}$ + 2x $^){2}$ + 3 ( $x^{2}$ + 2x ) + 2

Toán Lớp 8: PTĐTTNT: ( $x^{2}$ + 2x $^){2}$ + 3 ( $x^{2}$ + 2x ) + 2

Tháng Chín 14, 2022 Toán học 2 Comments 0 views

Toán Lớp 8: PTĐTTNT: ( $x^{2}$ + 2x $^){2}$ + 3 ( $x^{2}$ + 2x ) + 2

Comments ( 2 )

  1. khanhlanchau
    khanhlanchau
    14 Tháng Chín, 2022 at 12:32 sáng
    Reply
    (x^2+2x)^2+3(x^2+2x)+2
    =(x^2+2x)^2+(x^2+2x)+2(x^2+2x)+2
    =(x^2+2x)(x^2+2x+1)+2(x^2+2x+1)
    =(x^2+2x+1)(x^2+2x+2)
    =(x+1)^2(x^2+2x+2)

  2. chauhoangmy98
    chauhoangmy98
    14 Tháng Chín, 2022 at 12:32 sáng
    Reply
    (x^2 +2x)^2 +3(x^2 +2x)+2
    = (x^2 +2x)^2 +(x^2 +2x)+2(x^2 +2x)+2
    = (x^2 +2x+1)(x^2 +2x) + 2(x^2 +2x+1)
    = (x^2 +2x+1)(x^2 +2x+2)
    = (x+1)^2 (x^2 +2x+2)

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

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