a) x+1/2x-6-4/2x-6 b) 3x-4/6x+3-x-5/6x+3
c) x-1/x-3-3x-8/3-x+3-2x/x-3 d) 3/x+5-5/x-7
e) 3/x+5-5/x-7 f) 2/x-2+3/x+2+5x-18/x2-4
Thực hiện các phép tính sau :
a) \(\dfrac{x^3-x^2+x-1}{x^2-4}-\dfrac{x-2}{x^2+3x+2}-\dfrac{3x}{x^2-x-2}-\dfrac{2x+5}{\left(x+1\right)\left(4-x^2\right)}\)
b) \(\dfrac{19^2-30x+9}{2x^3+54}-\dfrac{x^3-3}{2^2+6x}-\dfrac{3x^2}{2x^2-6x+18}\)
Thực hiện các phép tính sau :
a) \(\dfrac{3}{2x+6}-\dfrac{x-6}{2x^2+6x}\)
b) \(\dfrac{1}{xy-x^2}-\dfrac{1}{y^2-xy}\)
Thực hiện phép tính: A, x-2 - x^2-10/x+2 B, x/y^2- xy - y/xy-x^2 C, 1/x(x-1) + 1/x-1(x-2) + 1/(x-2)(x-3) + 1/(x-3)(x-4) + 1/(x-4)(x-5) Giúp mình bài này với ạ
a)\(\dfrac{3}{2y+4}-\dfrac{1}{3y+6}\)
b)\(\dfrac{1}{2x-3}-\dfrac{1}{2x+3}\)
c)\(\dfrac{1}{xy-x^2}-\dfrac{1}{y^2-xy}\)
d)\(\dfrac{x+1}{x+4}-\dfrac{x^2-4}{x^2-16}\)
bài 1: tính
a, A= 2x-9/x2-5x+6 - x+3/x-2 - 2x+1/3-x
b, B= 2x+1/x2-7x+12 - x+3/x-4 + 2x+1/x-3
c, C= x+2/x+3 - 5/x2+x-6 + 1/2-x
d, D= 3(x2+x-3)/x2+x-2 + x+3/x+2 - x-2/x-1
Cho \(A=\dfrac{32x-8x^2+2x^3}{x^3+64}\)(x khác -4)
Tìm x nguyên khi A nguyên
3. Làm tính trừ các phân thức sau:
a) \(\dfrac{3}{2y+4}-\dfrac{1}{3y+6}\)
b) \(\dfrac{1}{2x-3}-\dfrac{1}{2x+3}\)
c) \(\dfrac{1}{xy-x^2}-\dfrac{1}{y^2-xy}\)
d) \(\dfrac{x+1}{x+4}-\dfrac{x^2-4}{x^2-16}\)
Giúp mình với ạ!!! ai trả lời nhanh mình tick luôn nhé
a, \(\frac{2x^2-x}{x^2+x+1}+\frac{x^3-2x^2}{x^2+x+1}+\frac{x-1}{x^2+x+1}\)
b, \(\frac{2x+y}{x\left(y^2-x\right)}-\frac{2x-y}{x\left(y^2-x\right)}\)
c, \(\frac{4}{x+2}+\frac{3}{x-2}+\frac{-5-2}{x^2-4}\)
d, \(\frac{1-2x}{2x}+\frac{2x}{2x-1}+\frac{1}{2x-4x^2}\)
e, \(\frac{1}{x-y}+\frac{3xy}{y^3-x^3}+\frac{x-y}{x^2+xy+y^2}\)
f, \(\frac{3}{x^2+2xy+y^2}+\frac{4}{2xy-x^2-y^2}+\frac{5}{x^2-y^2}\)
