UC知道一些数学问题16题赏
来源：百度知道 编辑：UC知道 时间：2024/05/30 16:02:42
有很多啊有耐心的人解完了再加五十分!要有过程（^后面的几就是几次方）
1.(3xy+y)/y 2.(ma+mb+mc)/m
3.(6c^2-c^2d)/(-2c^2 d) 4.(4x^2 y+3xy^2)/(7xy).
5.(2x^2y+3xy^2)-(6x^2y-3xy^2) 6.(5mn-2m+3n)+(-7m-7mn)
7.(6a^2-8a+11b^3)-(11a^2+2b^3)
8.(2ab+3b^2-5)-(3ab+3b^2-8)
9.（4x^2y+5xy-7x)-(5x^2y+4xy+x)
10.-(10x^3+2xy^2+y^3)
11.(4mn^2+3m^2n-4m)-2(mn^2+2分之三m^2n+1)
12.3(a^3-a^2b+2分之1ab^2)减二分之一(6a^3+4a^2b+3ab^2)
13.(-5分之三）^2×（-5分之三）^3
14.（a-b)^3×（a-b)^4
15.(-a^5)^5
16.(-二分之一x)^7/(-二分之一x)
1.(3xy+y)/y 2.(ma+mb+mc)/m
3.(6c^2-c^2d)/(-2c^2 d) 4.(4x^2 y+3xy^2)/(7xy).
5.(2x^2y+3xy^2)-(6x^2y-3xy^2) 6.(5mn-2m+3n)+(-7m-7mn)
7.(6a^2-8a+11b^3)-(11a^2+2b^3)
8.(2ab+3b^2-5)-(3ab+3b^2-8)
9.（4x^2y+5xy-7x)-(5x^2y+4xy+x)
10.-(10x^3+2xy^2+y^3)
11.(4mn^2+3m^2n-4m)-2(mn^2+2分之三m^2n+1)
12.3(a^3-a^2b+2分之1ab^2)减二分之一(6a^3+4a^2b+3ab^2)
13.(-5分之三）^2×（-5分之三）^3
14.（a-b)^3×（a-b)^4
15.(-a^5)^5
16.(-二分之一x)^7/(-二分之一x)
你自己用A的三之一和B的三二之和来算就可以了呵呵
1. 3x+1
2. a+b+c
3. -3/d+1/2
4. 4x/7+3/(7y)
5. -4x²y+6xy²
6. -2mn-9m+3n
7. -5a²-8a+9b³
8. -ab+3
9. -x²y+xy-8x
10. -(10x^3+2xy^2+y^3)
11. 2mn²－4m-2
12. -5a²b
13. -243/3125
14. (a-b)^7
15. -a^25
16. x^6/64
1.(3xy+y)/y
=y(3x+1)/y
=3x+1
2.(ma+mb+mc)/m
=m(a+b+c)/m
=a+b+c
3.(6c^2-c^2d)/(-2c^2 d)
=c^2(6-d)/(-2c^2 d)
=(6-d)/(-2d)
= -3/d+1/2
4.(4x^2 y+3xy^2)/(7xy).
=xy(4x+3y)/(7xy)
=(4x+3y)/7.
5.(2x^2y+3xy^2)-(6x^2y-3xy^2)
=xy(2x+3y)-xy(6x-3y)
=xy(2x+3y-6x+3y)
=xy(6y-4x)
=6xy^2-4x^2y
6.(5mn-2m+3n)+(-7m-7mn)
=5mn-2m+3n-7m-7mn
=3n-9m-2mn
7.(6a^2-8a+11b^3)-(11a^2+2b^3)
=6a^2-11a^2-8a+11b^3-2b^3
=9b^3-8a-5a^2
8.(2ab+3b^2-5)-(3ab+3b^2-8)
= 2ab-3ab+3b^2-3b^2-5+8
=3-ab<