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

Toán Lớp 8: (3x-5)(x+2) (X-2)(x+2)-(x^2+5x) Thanks ah

Tháng Mười 9, 2022 Toán học 1 Comment 0 views

Toán Lớp 8: (3x-5)(x+2)
(X-2)(x+2)-(x^2+5x)
Thanks ah

Comments ( 1 )

  1. ngoclanquynh
    ngoclanquynh
    9 Tháng Mười, 2022 at 12:08 chiều
    Reply
    Giải đáp:
    3????2+????−10
    −5????−4
    Lời giải và giải thích chi tiết:
    (3x-5)(x+2)= 3????(????+2)−5(????+2)=3????2+6????−5(????+2)=3????2+6????−5????−10=3????2+????−10
    (????−2)(????+2)−(????2+5????)=????(????+2)−2(????+2)−(????2+5????)=????2+2????−2(????+2)−(????2+5????)=????2+2????−2????−4−(????2+5????) =????2−4−(????2+5????)=????2−4−????2−5????=−4−5????=−5????−4

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

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