1.(x^2+2y)r+(x^2+2y)s
2.dx-ex+3d-3e
3.(ba^2)^4 x (a^4)^3/(a^3b)^2
4.(a^3/b^2)^4 x (b^5/a^4)^2 除a^2b^3
唔好意思><4題數唔識(20分)唔該呀!!!
2012-10-06 8:58 pm
回答 (4)
2012-10-07 4:27 pm
✔ 最佳答案
1.(x^2+2y)r+(x^2+2y)s
=(x^2+2y)(r+s)
2.
dx-ex+3d-3e
=x(d-e)+3(d-e)
=(d-e)(x+3)
3.
(ba^2)^4 x (a^4)^3/(a^3b)^2
=(a^8 b^4 a^12)/(a^6 b^2)
=a^14 b^2
4.
(a^3/b^2)^4 x (b^5/a^4)^2 除a^2b^3
=(a^12 /b^8)(b^10/b^6)除a^2 b^3
=(a^6 b^2)/(a^2 b^3)
=(a^4)/b
2012-10-07 3:25 am
(x^2+2y)r+(x^2+2y)s
=(r+s)(x^2+2y)
dx-ex+3d-3e
=x(d-e)+3(d-e)
=(x+3)(d-e)
(ba^2)^4 x (a^4)^3/(a^3b)^2
=(b^4a^8)(a^12)/(a^6b^2)
=(b^4a^20)/(a^6b^2)
=a^14b^22
(a^3/b^2)^4 x (b^5/a^4)^2 除a^2b^3
=(a^12/b^8)(b^10/a^8)/(a^2b^3)
=(a^12b^-8)(b^10a^-8)/(a^2b^3)
=(a^4b^2)/(a^2b^3)
=a^2b^-1
=(r+s)(x^2+2y)
dx-ex+3d-3e
=x(d-e)+3(d-e)
=(x+3)(d-e)
(ba^2)^4 x (a^4)^3/(a^3b)^2
=(b^4a^8)(a^12)/(a^6b^2)
=(b^4a^20)/(a^6b^2)
=a^14b^22
(a^3/b^2)^4 x (b^5/a^4)^2 除a^2b^3
=(a^12/b^8)(b^10/a^8)/(a^2b^3)
=(a^12b^-8)(b^10a^-8)/(a^2b^3)
=(a^4b^2)/(a^2b^3)
=a^2b^-1
2012-10-07 1:19 am
1.(x^2+2y)r+(x^2+2y)s=(x^2+2y)(r+s)//
2.dx-ex+3d-3e=(d-e)(x+3)//
3.(ba^2)^4 x (a^4)^3/(a^3b)^2=(a^14)(b^2)//
4.(a^3/b^2)^4 x (b^5/a^4)^2 除a^2b^3=1 / b //
2.dx-ex+3d-3e=(d-e)(x+3)//
3.(ba^2)^4 x (a^4)^3/(a^3b)^2=(a^14)(b^2)//
4.(a^3/b^2)^4 x (b^5/a^4)^2 除a^2b^3=1 / b //
2012-10-06 10:49 pm
1.(x^2+2y)r+(x^2+2y)s
=(x^2+2y)(r+s)//
2.dx-ex+3d-3e
=d(x+3)-e(x+3)
=(d-e)(x+3)//
3.(ba^2)^4 x (a^4)^3/(a^3b)^2
=b^4 * a^8 * a^12 / (a^6 * b^2)
=a^(8+12-6)b^(4-2)
=(a^14)(b^2)//
4.(a^3/b^2)^4 x (b^5/a^4)^2 除a^2b^3
=(a^12 / b^8) * (b^10 / a^8) / (a^2b^3)
=a^(12-8-2)b^(10-8-3)
=(a^0)(b^ -1)
=1 / b //
=(x^2+2y)(r+s)//
2.dx-ex+3d-3e
=d(x+3)-e(x+3)
=(d-e)(x+3)//
3.(ba^2)^4 x (a^4)^3/(a^3b)^2
=b^4 * a^8 * a^12 / (a^6 * b^2)
=a^(8+12-6)b^(4-2)
=(a^14)(b^2)//
4.(a^3/b^2)^4 x (b^5/a^4)^2 除a^2b^3
=(a^12 / b^8) * (b^10 / a^8) / (a^2b^3)
=a^(12-8-2)b^(10-8-3)
=(a^0)(b^ -1)
=1 / b //
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