灵鹊做题网化简1.9x-9/4-4x 2.x^2-1/x^2+x-2 3.x^2-4x+4/2x-4 4.3x^2-9x-12/x
来源：学生作业帮 编辑：灵鹊做题网作业帮 分类：数学作业 时间：2024/06/25 20:51:16
化简1.9x-9/4-4x 2.x^2-1/x^2+x-2 3.x^2-4x+4/2x-4 4.3x^2-9x-12/x^2+2x+1 5.x^2-7x+12/-x^2+9x-20 急
6.xy-x-y+1/y^2-2y+1
6.xy-x-y+1/y^2-2y+1
1.9x-9/4-4x
=9(x-1)/4(1-x)
=-9/4
2.x^2-1/x^2+x-2
=(x+1)(x-1)/(x-1)(x+2)
=(x+1)/(x+2)
3.x^2-4x+4/2x-4
=(x-2)²/2(x-2)
=(x-2)/2
4.3x^2-9x-12/x^2+2x+1
=3(x-4)(x+1)/(x+1)²
=3(x-4)/(x+1)
5.x^2-7x+12/-x^2+9x-20
=(x-3)(x-4)/-(x-4)(x-5)
=-(x-3)/(x-5)
6.xy-x-y+1/y^2-2y+1
=(y-1)(x-1)/(y-1)²
=(x-1)/(y-1)
=9(x-1)/4(1-x)
=-9/4
2.x^2-1/x^2+x-2
=(x+1)(x-1)/(x-1)(x+2)
=(x+1)/(x+2)
3.x^2-4x+4/2x-4
=(x-2)²/2(x-2)
=(x-2)/2
4.3x^2-9x-12/x^2+2x+1
=3(x-4)(x+1)/(x+1)²
=3(x-4)/(x+1)
5.x^2-7x+12/-x^2+9x-20
=(x-3)(x-4)/-(x-4)(x-5)
=-(x-3)/(x-5)
6.xy-x-y+1/y^2-2y+1
=(y-1)(x-1)/(y-1)²
=(x-1)/(y-1)
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
x*x+2x+x*x+10x+x*x+25+2x+x*x+1+1+16+x*x+4x*x+9-12x+16x*x+4-1
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
化简1.9x-9/4-4x 2.x^2-1/x^2+x-2 3.x^2-4x+4/2x-4 4.3x^2-9x-12/x
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
通分x+4/x*x+4x与x-5/x(x-5)-2(x-5)
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
约分 (X的平方+4x+3)(2x-x)^/(X^+X)(X^+X-6),
(4x+2)/x+(4x-22)/(x-5)=(x-6)/(x-4)+(7x+9)/(x+1)