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

Toán Lớp 8: Phân tích (x+y)(2x-y) – (3x-y)(y-2x) – (y-2x) 5u(u-v)^2 +10u^2(v-u)^2

Toán Lớp 8: Phân tích
(x+y)(2x-y) – (3x-y)(y-2x) – (y-2x)
5u(u-v)^2 +10u^2(v-u)^2

Comments ( 1 )

  1. Giải đáp + Lời giải và giải thích chi tiết:
    $(x+y)(2x-y) – (3x-y)(y-2x) – (y-2x)$
    $=(x+y)(2x-y)+(3x-y)(2x-y)$
    $=(2x-y).(x+y+3x-y)$
    $=4x.(2x-y)$
    $5u(u-v)^2 +10u^2(v-u)^2$
    $=5u(u-v)^2+10u^2(u-v)^2$
    $=5u(u-v)^2.(1+2u)$
     

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

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