tính a,(x+2y)^2 b,(3x-2y)^2 c,(2x-1/2)^2 d,(x/2-y)(x/2+y) e,(x+1/3)^2 f,(x-2)(x^2+2x-4)

Question

tính
a,(x+2y)^2
b,(3x-2y)^2
c,(2x-1/2)^2
d,(x/2-y)(x/2+y)
e,(x+1/3)^2
f,(x-2)(x^2+2x-4)

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Sigridomena 6 years 2020-10-18T14:03:30+00:00 2 Answers 194 views 1

Answers ( )

  1. Philomena
    0
    2020-10-18T14:04:42+00:00
    Reply

    a,(x+2y)^2=x^2+4xy+4y^2
    b,(3x-2y)^2=9x^2-12xy+4y^2
    c,(2x-1/2)^2=4x^2+2x+1/4
    d,(x/2-y)(x/2+y)=x^4-y^2
    e,(x+1/3)^2=x^2+2/3x+1/9
    f,(x-2)(x^2+2x-4)=x^3-8
                  Chúc bạn học tốt!

                          _Thiênlinh_

  2. Nem
    0
    2020-10-18T14:05:04+00:00
    Reply

    Mik TB trong hình 

    tinh-a-2y-2-b-3-2y-2-c-2-1-2-2-d-2-y-2-y-e-1-3-2-f-2-2-2-4

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )