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

Toán Lớp 8: ( $2x^{2}y^{4}$ – $15xy^{2}$ ) : $5xy^{2}$ – $\frac{2}{5}xy^{2}$

Toán Lớp 8: ( $2x^{2}y^{4}$ – $15xy^{2}$ ) : $5xy^{2}$ – $\frac{2}{5}xy^{2}$

Comments ( 2 )

  1. Giải đáp:
    = – 3
    Lời giải và giải thích chi tiết:
     (2x^2 y^4 – 15xy^2 ) : 5xy^2 – 2/5 xy^2
    = (2x^2 y^4 : 5xy^2) – (15xy^2 : 5xy^2) – 2/5 xy^2
    = 2/5 xy^2 – 3 – 2/5xy^2
    = (2/5 xy^2 – 2/5 xy^2) – 3
    = – 3
    #SunHee

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