(1)1/a-1/b (2)(x^2+4x+4)/(x^2-4)-x/(x-2) (3)1/b+2/b
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:综合作业 时间:2024/08/17 00:42:33
(1)1/a-1/b (2)(x^2+4x+4)/(x^2-4)-x/(x-2) (3)1/b+2/b
![(1)1/a-1/b (2)(x^2+4x+4)/(x^2-4)-x/(x-2) (3)1/b+2/b](/uploads/image/z/2447510-14-0.jpg?t=%281%291%2Fa-1%2Fb+%282%29%28x%5E2%2B4x%2B4%29%2F%28x%5E2-4%29-x%2F%28x-2%29+%283%291%2Fb%2B2%2Fb)
1/a-1/b=b/ab-a/ab=(b-a)/ab
(x^2+4x+4)/(x^2-4)-x/(x-2)=(x+2)^2/(x+2)(x-2)-x/(x-2)=(x+2)/(x-2)-x/(x-2)=2/(x-2)
1/b+2/b=(1+2)/b=3/
(x^2+4x+4)/(x^2-4)-x/(x-2)=(x+2)^2/(x+2)(x-2)-x/(x-2)=(x+2)/(x-2)-x/(x-2)=2/(x-2)
1/b+2/b=(1+2)/b=3/
3x/6x^2z a+b/a^2-b^2 x^2+2x+1/x^2+x 3x-6/x^2-4x+4
已知集合A={x|(x-2)*(x+1)>0},B={x|4x+a
1.已知3x-4/(x-1)(x-2)=A/x-1+B/x-2,求实数A,B.
1/4(a-b)^2x(b-a)^3x(-a-b)^5x(2a+2b)^4
已知(3X+4)/(X·X-X-2)=A/(X-2)-B/(X+1),其中A.B是常数,求4A-B的值.
求分式加减法 (1)4b/a^2-b^2 + 3/b-a (2)(x/x-2 - x/x+2)/ 4x/2-x
4x+1/x^2-7x+10=A/X-2 +B/x-5 求A ,B的值
x^2-6x+5= A(x-2)(x-3)B(x-6)(x+1)
计算:(1)(x平方/x-2+4/2-x)除以x+2/x (2)a+b-a平方/a-b-b平方/b-a+1
若A=3x^2 -x-1,B=4x^2-5x+4,则A,B大小
已知2x平方+3x+4=a(x-1)平方+b(x-1)+c,求a、b、c
已知A=2x-13x²+3,B=5x²+4x-1,求A+B