(2/3-3/4-1/12)X(-24)(-3/4)X(8- 1 1/3-0.04+ 3 1/5)我们今天教分配率 请按那个做 3L 请先看我的补充 1L 2L 希望改改

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(2/3-3/4-1/12)X(-24)(-3/4)X(8-11/3-0.04+31/5)我们今天教分配率请按那个做3L请先看我的补充1L2L希望改改(2/3-3/4-1/12)X(-24)(-3/4

(2/3-3/4-1/12)X(-24)(-3/4)X(8- 1 1/3-0.04+ 3 1/5)我们今天教分配率 请按那个做 3L 请先看我的补充 1L 2L 希望改改
(2/3-3/4-1/12)X(-24)
(-3/4)X(8- 1 1/3-0.04+ 3 1/5)
我们今天教分配率 请按那个做
3L 请先看我的补充 1L 2L 希望改改

(2/3-3/4-1/12)X(-24)(-3/4)X(8- 1 1/3-0.04+ 3 1/5)我们今天教分配率 请按那个做 3L 请先看我的补充 1L 2L 希望改改
1.原式=2/3×(-24)+(-3/4)×(-24)+(-1/12)×(-24)
=-16+18+2=4
2.原式=(-3/4)×(8-4/3-1/25+16/5)
=(-3/4)×8+(-3/4)×(-4/3)+(-3/4)×(-1/25)
+(-3/4)×16/5
=-6+1+3/10-12/5=-71/10

先通分母(8/12-9/12-6/12)x(-24)
=(-1/12-6/12)x(-24)
=(-7/12)x(-24)
=14
2、
首先把小数化成分数
(-3/4)x(8-11/3-1/25+31/5)
(通分母)=(-3/4)x(600/75-275/75+3/75+465/75)
=(-3/4)x(793/75)
=-793/100

(2/3-3/4-1/12)X(-24)
=2/3×(-24)+3/4×24+1/12×24
=-16+18+2
=4
(-3/4)X(8- 1 1/3-0.04+ 3 1/5)
=-3/4×8+3/4×11/3+3/4×1/25-3/4×31/5
=-6+11/4+3/100-93/20
=-6+2.75+0.03-4.65
=-7.87

(2/3-3/4-1/12)X(-24)
=2/3X(-24)-3/4X(-24)-1/12X(-24)
=-16-(-18)-(-2)
=-16+18+2
=4
第二题没有写清楚
(-3/4)X(8-1 1/3-0.04+ 3 1/5)
=(-3/4)X(8-4/3-0.04+ 16/5)
=(-3/4)X8-(-3/4)X4/3-(-3/4)X0.04+(-3/4)X 16/5
=-6+1+0.03-12/5
=(-6)+1+0.03-2.4
=-7.37

1,(8/12-9/12-1/12)x(-24)
=(-2/12)x(-24)
=4
2,-6+11/4+0.03-12/5
=(-6)+2.75+0.03-2.4
=-5.62

解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1 一元二次方程解答!x(5x+4)=5x+44x^2-45=31x-3x^2+22x-24=0(x+8)(x+1)= -12(3x+2)(x+3)=x+14 解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3(x/x-2 - 1-x²不是一起的!)2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8(5x/x²+x-6 - 5-2x不是一起的!)3、x-4/x-5 + x-8/x-9=x-7/x- 因式分解x^4-11x^2+1还有一道 (x+1)(x+2)(x+3)-24(x+1)(x+2)(x+3)-24没有(x+4) 先化简,再求值:[(4x^2+12x)/(x^2+x-6)/[(x-2)/(x+2)-(x+2)/(x-2)]其中x-3(2/1) (x^24 x^23 x^22 …… x)÷(x^8+1)×(x^3+x^2-x-1)÷(x-1)÷(x^4+1)求值(x^24+x^23+x^22+……+x+1)÷(x^8+1)×(x^3+x^2-x-1)÷(x-1)÷(x^4+1) (x-1)^3(x+1)(x-2)/(x+4) (X²+4x+8)²+3x(x²+4x+8)+2x²因式分解 (X²+4x+8)²+3x(x²+4x+8)+2x²(2x²-3x+1)²-22x²+33x-1(x²+x+1)(x²+x+2)-12(6x-1)(2x-1)(3x-1)(x-1)+x²ab(a+b)²-(a+b)²+1x²+xy-6y (x+2)(x-2)+16 (x-1)(x-2)+3x(x+3)-4(x+2)(x-3)(x+2)(x-2)+16 (x-1)(x-2)+3x(x+3)-4(x+2)(x-3) (1)14x^2-45x-14 (2)18x^2+3x-10 (3)8x^2-18x+9 (4)10x ^2-11x-6 (5)15x^2-47x+28 (6)x^2-17x+10(1)14x^2-45x-14 (2)18x^2+3x-10 (3)8x^2-18x+9 (4)10x ^2-11x-6 (5)15x^2-47x+28(6)x^2-17x+10 (7)12x^2-x-6 (8)24x^2-2x-15 因式分解 (x+1)(x+2)(x+3)(x+4)+1(x+1)(x-2)(x+3)(x-4)+25 (x-1)/(x^2-5x+6)+(x-2)/(x^2-4x+3)+(x-3)/(x^2-3x+2)还有一道:(1-4x)^2/2x+3*(4x^2+12x+9)/(4x-1)(1-4x)^2/(2x+3)*(4x^2+12x+9)/(4x-1)第二题应该是这样的、不好意思、要有过程! 计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1 因式分解:(1)x^2-7x+6(2)x^2-5x+6(3)x^2-5x-6(4)x^2-7x+8(5)x^2-7x+12(6)x^2-7x-18 2道简单的因式分解写下过程(x-3)(x-1)(x+2)(x+4)+24(x^2-5x)(x^2-5x-2)-24 用换元法解方程 1、x²-x-12/x²-x=4 2、(3x²/x+1)-(x+1/x²=2) (x-1)(x+3)=12,(3x-5)(2x-1)= -12x+7,(6x+5)(6y-5)-24=0,4(x-3)²-x(x-3)=0用因式分解怎么解? 先化简,再求值:(1)(x+1/x²-x-x/x²-2x+1)÷1/x,x=根号2+1 (2)(1+x-3/x+3)÷2x/x²-9 x=根号3+3 (3)4-x/x-2÷(x+2-12/x-2)x=根号3-4 (4)x-3/2x-4÷(5/x-2-x-2) x=根号3-2