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

Toán Lớp 7: a)A=Ix-1I+I2-xI b)B=Ix-3I+Ix-4I c)C=Ix-3I+Ix-4I+Ix-5I

Home/ Toán Lớp 7: a)A=Ix-1I+I2-xI b)B=Ix-3I+Ix-4I c)C=Ix-3I+Ix-4I+Ix-5I

Toán Lớp 7: a)A=Ix-1I+I2-xI b)B=Ix-3I+Ix-4I c)C=Ix-3I+Ix-4I+Ix-5I

Tháng Tám 30, 2022 Toán học 1 Comment 0 views

Toán Lớp 7: a)A=Ix-1I+I2-xI
b)B=Ix-3I+Ix-4I
c)C=Ix-3I+Ix-4I+Ix-5I

Comments ( 1 )

  1. phuongthuydung
    phuongthuydung
    30 Tháng Tám, 2022 at 6:46 sáng
    Reply
    a) A = | x – 1|  +|2 – x|
    A = | x -1 + 2 – x|
    A = | 1|
    A = 1
    b) B = | x – 3| + | x – 4|
    B = | x – 3 + x – 4|
    B = | 2x – 7|
    c) C = | x – 3| + | x – 4| + | x – 5|
    C = | x – 3 + x – 4 + x – 5|
    C = |3x – 12|
    Bạn tham khảo!

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

Nguyệt Minh

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