70道整式的乘除计算题及答案,很急,拜托了!!
3个回答
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1,(2a+3b)²=4a²+12ab+9b²,
2,(a+2b)(3a+b)=3a²+7ab+2b²,
3,(a-2b)(3a+b)=3a²-5ab-2b²,
4,(a+2b)(3a-b)=3a²+5ab-2b²,
5,(a-2b)(3a-b)=3a²-7ab+2b²,
6,(a+2b)(3a+b+2c)=3a²+7ab+2b²+2ac+4bc,
7,(a+2b)(3a+b-2c)=3a²+7ab+2b²-2ac-4bc,
8,(a+2b+c)(3a+b+2c)=3a²+2b²+2c ²+7ab+5ac+5bc,
9,(a+2b-c)(3a+b+2c)=3a²+2b²-2c ²+7ab-ac+3bc,
10,(a+2b-c)(3a+b-2c)=3a²+2b²+2c ²+7ab-5ac-5bc,
11,(x+2y)3=x3+6x²y+12xy²+8y3,
12,(x-2y)3=x3-6x²y+12xy²-8y3,
13(2x+y+3z)²=4x²+y²+9z²+4xy+6yz+12zx
15,(2x-y+3z)²=4x²+y²+9z²-4xy-6yz+12zx
16,(2x+y-3z)²=4x²+y²+9z²+4xy-6yz-12zx,
18,(2x+y)(4x²-2xy+y²)=-8x3+y3,
19,(2x-y)(4x²+2xy+y²)=-8x3-y3,
20,2ax(x3y+3x²y²+xy²+x+a+5)=2ax4y+6ax3y3+2x²y²+2ax²+2a²x+10ax,
1、(3ab-2a)÷a
2、(x^3-2x^y)÷(-x^2)
3、-21a^2b^3÷7a^2b
4、(6a^3b-9a^c)÷3a^2
5、(5ax^2+15x)÷5x
6、(a+2b)(a-2b)
7、(3a+b)^2
8、(1/2 a-1/3 b)^2
9、(x+5y)(x-7y)
10、(2a+3b)(2a+3b)
11、(x+5)(x-7)
12、5x^3×8x^2
13、-3x×(2x^2-x+4)
14、11x^12×(-12x^11)
15、(x+5)(x+6)
16、(2x+1)(2x+3)
17、3x^3y×(2x^2y-3xy)
18、2x×(3x^2-xy+y^2)
19、(a^3)^3÷(a^4)^2
20、(x^2y)^5÷(x^2y)^3
21、(y^3)^3÷y^3÷(-y^2)^2
22、(-2mn^3)^3
23、(2x-1)(3x+2)
24、(2/3 x+3/4y)^2
25、2001^2-2002×2002
26、(2x+5)^2-(2x-5)^2
27、-12m^3n^3÷4m^2n^3
28、2x^2y^2-4y^3z
29、1-4x^2
30、x^3-25x
31、x^3+4x^2+4x
32、(x+2)(x+6)
33、2a×3a^2
34、(-2mn^2)^3
35、(-m+n)(m-n)
36、27x^8÷3x^4
37、(-2x^2)×(-y)+3xy×(1-1/3 x)
38、am-an+ap
39、25x^2+20xy+4y^2
40、(-4m^4+20m^3n-m^2n^2)÷(-4m^2)
41、(12p^3q^4+20p^3q^2r-6p^4q^3)÷(-2pq)^2
42、[4y(2x-y)-2x(2x-y)]÷(2x-y)
43、(x^2y^3-1/2 x^3y^2+2x^2y^2)÷1/2 xy^2
44、(4a^3b^3-6a^2b^3c-2ab^5)÷(-2ab^2)
45、(ax+bx)÷x
46、(ma+mb+mc)÷m
47、(9x^4-15x^2+6x)÷3x
48、(28a^3b^2c+a^2b^3-14a^2b^2)÷(-7a^2b)
49、(6xy^2)^2÷3xy
50、24a^3b^2÷3ab^2
2,(a+2b)(3a+b)=3a²+7ab+2b²,
3,(a-2b)(3a+b)=3a²-5ab-2b²,
4,(a+2b)(3a-b)=3a²+5ab-2b²,
5,(a-2b)(3a-b)=3a²-7ab+2b²,
6,(a+2b)(3a+b+2c)=3a²+7ab+2b²+2ac+4bc,
7,(a+2b)(3a+b-2c)=3a²+7ab+2b²-2ac-4bc,
8,(a+2b+c)(3a+b+2c)=3a²+2b²+2c ²+7ab+5ac+5bc,
9,(a+2b-c)(3a+b+2c)=3a²+2b²-2c ²+7ab-ac+3bc,
10,(a+2b-c)(3a+b-2c)=3a²+2b²+2c ²+7ab-5ac-5bc,
11,(x+2y)3=x3+6x²y+12xy²+8y3,
12,(x-2y)3=x3-6x²y+12xy²-8y3,
13(2x+y+3z)²=4x²+y²+9z²+4xy+6yz+12zx
15,(2x-y+3z)²=4x²+y²+9z²-4xy-6yz+12zx
16,(2x+y-3z)²=4x²+y²+9z²+4xy-6yz-12zx,
18,(2x+y)(4x²-2xy+y²)=-8x3+y3,
19,(2x-y)(4x²+2xy+y²)=-8x3-y3,
20,2ax(x3y+3x²y²+xy²+x+a+5)=2ax4y+6ax3y3+2x²y²+2ax²+2a²x+10ax,
1、(3ab-2a)÷a
2、(x^3-2x^y)÷(-x^2)
3、-21a^2b^3÷7a^2b
4、(6a^3b-9a^c)÷3a^2
5、(5ax^2+15x)÷5x
6、(a+2b)(a-2b)
7、(3a+b)^2
8、(1/2 a-1/3 b)^2
9、(x+5y)(x-7y)
10、(2a+3b)(2a+3b)
11、(x+5)(x-7)
12、5x^3×8x^2
13、-3x×(2x^2-x+4)
14、11x^12×(-12x^11)
15、(x+5)(x+6)
16、(2x+1)(2x+3)
17、3x^3y×(2x^2y-3xy)
18、2x×(3x^2-xy+y^2)
19、(a^3)^3÷(a^4)^2
20、(x^2y)^5÷(x^2y)^3
21、(y^3)^3÷y^3÷(-y^2)^2
22、(-2mn^3)^3
23、(2x-1)(3x+2)
24、(2/3 x+3/4y)^2
25、2001^2-2002×2002
26、(2x+5)^2-(2x-5)^2
27、-12m^3n^3÷4m^2n^3
28、2x^2y^2-4y^3z
29、1-4x^2
30、x^3-25x
31、x^3+4x^2+4x
32、(x+2)(x+6)
33、2a×3a^2
34、(-2mn^2)^3
35、(-m+n)(m-n)
36、27x^8÷3x^4
37、(-2x^2)×(-y)+3xy×(1-1/3 x)
38、am-an+ap
39、25x^2+20xy+4y^2
40、(-4m^4+20m^3n-m^2n^2)÷(-4m^2)
41、(12p^3q^4+20p^3q^2r-6p^4q^3)÷(-2pq)^2
42、[4y(2x-y)-2x(2x-y)]÷(2x-y)
43、(x^2y^3-1/2 x^3y^2+2x^2y^2)÷1/2 xy^2
44、(4a^3b^3-6a^2b^3c-2ab^5)÷(-2ab^2)
45、(ax+bx)÷x
46、(ma+mb+mc)÷m
47、(9x^4-15x^2+6x)÷3x
48、(28a^3b^2c+a^2b^3-14a^2b^2)÷(-7a^2b)
49、(6xy^2)^2÷3xy
50、24a^3b^2÷3ab^2
追问
谢谢啦!
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(3x+5y)(3x-2y) (x+11)(x-20) (-3x)(2xy-6) x(x2-x)+2x2(x-1)
(m-30)(m+30) (2x-9)(2x+9) (2x-3t)(2x+3t) (3x-7)(3x+7)
(-2m+n)(n+2m) (-5p-3)(5p-3) (x+2)(x+3) (x2-y)(x2+y)
(-2a3)·(2a2b-4ab2) (2x-y)(2x+y) (-3ab)2·(-2ab2) (x-1)(x+1)-x2
(x-2)(x+3) (x+2)(x-3) (x-2)(x-3) (x+2y)(x-2y) (3a-4b)(2a-5b) (5x-4y)(2x-3y) (3x+4y)(3x-4y) (2a-3b)(3a+2b)
(2m+5m)(6n-3m) (3x-y)(3x-y) (6x-y)(6x+y) (2x+y)(-2x-y) (x-5)(x+5) (3y-10)(3y+10) (8-5b)( +5b) (a-5b)(+5b)
(a-bc)(a+bc) (a+2b)(2b-a) (3x-y)(y+3x) 4x2-(2x-9)(2x+9)
(-7m+1)(-7m-1) (-x-5)(-x+5) (x2-2)(x2+2) (-2x-11y)(2x-11y)
(ab-3)(ab+3) (4y-3x)(3x+4y) (x+1)(x-1)-x² (4+2x)(2-x)
(3y-1)(3y+1)-(2y+2)(2y-2) (-3m2+1)(-3m2-1) (5x-2y)2+20xy
(a-2b)(a+2b)-(a-2b)2 2x2y-3y2 a(x+y)-2(x+y) (x+y)2-3(y+x) x(x-y)-a(y-x) (a+b)-a(a+b) (x-5)(x+5) (a2-5b)( +5b) x(a-b)-5(a-b) (x-y)2-(x-y) 3(2x+y)2+2(2x+y) (3y-10)(3y+10)
(xy3)(xy+3) 16m2+25-40m 18x2y-24xy2 -3a3b2+12b3a2 (2m-3n)(2n-5m) 3a2-6ab+3ab2 2x2y-3b2 没答案sorry
(m-30)(m+30) (2x-9)(2x+9) (2x-3t)(2x+3t) (3x-7)(3x+7)
(-2m+n)(n+2m) (-5p-3)(5p-3) (x+2)(x+3) (x2-y)(x2+y)
(-2a3)·(2a2b-4ab2) (2x-y)(2x+y) (-3ab)2·(-2ab2) (x-1)(x+1)-x2
(x-2)(x+3) (x+2)(x-3) (x-2)(x-3) (x+2y)(x-2y) (3a-4b)(2a-5b) (5x-4y)(2x-3y) (3x+4y)(3x-4y) (2a-3b)(3a+2b)
(2m+5m)(6n-3m) (3x-y)(3x-y) (6x-y)(6x+y) (2x+y)(-2x-y) (x-5)(x+5) (3y-10)(3y+10) (8-5b)( +5b) (a-5b)(+5b)
(a-bc)(a+bc) (a+2b)(2b-a) (3x-y)(y+3x) 4x2-(2x-9)(2x+9)
(-7m+1)(-7m-1) (-x-5)(-x+5) (x2-2)(x2+2) (-2x-11y)(2x-11y)
(ab-3)(ab+3) (4y-3x)(3x+4y) (x+1)(x-1)-x² (4+2x)(2-x)
(3y-1)(3y+1)-(2y+2)(2y-2) (-3m2+1)(-3m2-1) (5x-2y)2+20xy
(a-2b)(a+2b)-(a-2b)2 2x2y-3y2 a(x+y)-2(x+y) (x+y)2-3(y+x) x(x-y)-a(y-x) (a+b)-a(a+b) (x-5)(x+5) (a2-5b)( +5b) x(a-b)-5(a-b) (x-y)2-(x-y) 3(2x+y)2+2(2x+y) (3y-10)(3y+10)
(xy3)(xy+3) 16m2+25-40m 18x2y-24xy2 -3a3b2+12b3a2 (2m-3n)(2n-5m) 3a2-6ab+3ab2 2x2y-3b2 没答案sorry
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