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

Toán Lớp 7: $x^{4}$ – ( $x^{2}$ – $3^{2}$ )

Toán Lớp 7: $x^{4}$ – ( $x^{2}$ – $3^{2}$ )

Comments ( 2 )

  1. x^4 – (x^2 – 3^2)
    = x^4 – (-2x^2)
    = x^4 + 2x^2
    Cho mình xin hay nhất nha bạn!!!!
    @Drew Mclntyre

  2. x^4 – (x^2 – 3x^2)
    = x^4 – (-2x^2)
    = x^4 + 2x^2

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