Bài 6: Phép trừ các phân thức đại số
Các câu hỏi tương tự
Bài 1: Thực hiện phép chia:
a) \(\dfrac{5}{x}+\dfrac{x}{x+6}-\dfrac{30}{x^2+6x}\) với x ≠ -6 và x ≠ 0
b) \(\dfrac{3x+1}{\left(x-1\right)^2}-\dfrac{1}{x+1}+\dfrac{x+3}{1-x^2}\) với x ≠ \(\pm\)1
c) \(\dfrac{3x^2+2x+1}{x^3-1}-\dfrac{1-x}{x^2+x+1}-\dfrac{2}{x-1}\) với x ≠ 1
Tính phép tinh sau :
a) \(x-1-\dfrac{x^2-4}{x+1}\)
b) \(\dfrac{3x-1}{6x+2}-\dfrac{3x+1}{2-6x}-\dfrac{6x}{9x^2-1}\)
c)\(\dfrac{x}{x^2-2x}-\dfrac{x^2+4x}{x^3-4x}-\dfrac{2}{x^2+2x}\)
d) \(\dfrac{2x^2+1}{x^3+1}-\dfrac{x-1}{x^2-x-1}-\dfrac{1}{x+1}\)
1) thực hiện phép tính
a) dfrac{x-3}{4x+4}-dfrac{x-1}{6x-30}
b) dfrac{1}{x-5x^2}-dfrac{25x-15}{25x^2-1}
c) dfrac{x+9y}{x^2-9y^2}-dfrac{3y}{x^2-3xy}
d) dfrac{3x+1}{left(x-1right)^2}-dfrac{1}{x+1}-dfrac{x+3}{1-x^2}
e) dfrac{3left(x-2right)}{x^2-2x+1}-dfrac{6}{x^2-1}-dfrac{3x-2}{1-x^2}
Đọc tiếp
1) thực hiện phép tính
a) \(\dfrac{x-3}{4x+4}-\dfrac{x-1}{6x-30}\)
b) \(\dfrac{1}{x-5x^2}-\dfrac{25x-15}{25x^2-1}\)
c) \(\dfrac{x+9y}{x^2-9y^2}-\dfrac{3y}{x^2-3xy}\)
d) \(\dfrac{3x+1}{\left(x-1\right)^2}-\dfrac{1}{x+1}-\dfrac{x+3}{1-x^2}\)
e) \(\dfrac{3\left(x-2\right)}{x^2-2x+1}-\dfrac{6}{x^2-1}-\dfrac{3x-2}{1-x^2}\)
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) \(\dfrac{19^2-30x+9}{2x^3+54}-\dfrac{x^3-3}{2^2+6x}-\dfrac{3x^2}{2x^2-6x+18}\)
a) \(\dfrac{2^2}{x^2-1}\) - \(\dfrac{6}{3-x}\)- \(\dfrac{2x-6}{x^3-3x-x+3}\)
b) \(\dfrac{x+3}{x^2-6x}\)- \(\dfrac{x+9}{x-2x-24}\) + 1
6.Thực hiện phép tính:
a/\(\dfrac{x-3}{x}-\dfrac{x}{x-3}+\dfrac{9}{x^2-3x}\)
b/\(\dfrac{1}{x-2}-\dfrac{6x}{x^3-8}+\dfrac{x-2}{x^2+2x+4}\)
a)\(\dfrac{2}{x+2}-\dfrac{1}{x+3}+\dfrac{2x+5}{\left(x+2\right)\left(x+3\right)}\)
b)\(\dfrac{2}{x+1}-\dfrac{1}{x+5}+\dfrac{2x+6}{\left(x+5\right)\left(x+1\right)}\)
c)\(\dfrac{-6}{x^2-9}-\dfrac{1}{x+3}+\dfrac{3}{x-3}\)
d)\(\dfrac{x}{x-2}-\dfrac{x}{x+2}+\dfrac{8}{x^2-4}\)
Làm tính trừ phân thức :
a) dfrac{3x-2}{2xy}-dfrac{7x-4}{2xy}
b) dfrac{3x+5}{4x^3y}-dfrac{5-15x}{4x^3y}
c) dfrac{4x+7}{2x+2}-dfrac{3x+6}{2x+2}
d) dfrac{9x+5}{2left(x-1right)left(x+3right)^2}-dfrac{5x-7}{2left(x-1right)left(x+3right)^2}
e) dfrac{xy}{x^2-y^2}-dfrac{x^2}{y^2-x^2}
f) dfrac{5x+y^2}{x^2y}-dfrac{5y-x^2}{xy^2}
g)dfrac{x}{5x+5}-dfrac{x}{10x-10}
h) dfrac{x+9}{x^2-9}-dfrac{3}{x^2+3x}
Đọc tiếp
Làm tính trừ phân thức :
a) \(\dfrac{3x-2}{2xy}-\dfrac{7x-4}{2xy}\)
b) \(\dfrac{3x+5}{4x^3y}-\dfrac{5-15x}{4x^3y}\)
c) \(\dfrac{4x+7}{2x+2}-\dfrac{3x+6}{2x+2}\)
d) \(\dfrac{9x+5}{2\left(x-1\right)\left(x+3\right)^2}-\dfrac{5x-7}{2\left(x-1\right)\left(x+3\right)^2}\)
e) \(\dfrac{xy}{x^2-y^2}-\dfrac{x^2}{y^2-x^2}\)
f) \(\dfrac{5x+y^2}{x^2y}-\dfrac{5y-x^2}{xy^2}\)
g)\(\dfrac{x}{5x+5}-\dfrac{x}{10x-10}\)
h) \(\dfrac{x+9}{x^2-9}-\dfrac{3}{x^2+3x}\)
LÀM TÍNH CỘNG
a)dfrac{1}{5-2b}+dfrac{2b-2}{3left(2b-5right)}
b)dfrac{5b}{2b-6}+dfrac{8}{3-b}
c)dfrac{x+2}{x-1}-dfrac{x-9}{1-x}-dfrac{x-8}{1-x}
d)dfrac{3}{x+2}+dfrac{6x}{4-x^2}
e)dfrac{1}{a+1}+dfrac{2}{1-a}+dfrac{5a-1}{a^2-1}
GIÚP MÌNH VỚI MAI LÀ NỘP BÀI RỒI
Đọc tiếp
LÀM TÍNH CỘNG
a)\(\dfrac{1}{5-2b}+\dfrac{2b-2}{3\left(2b-5\right)}\)
b)\(\dfrac{5b}{2b-6}+\dfrac{8}{3-b}\)
c)\(\dfrac{x+2}{x-1}-\dfrac{x-9}{1-x}-\dfrac{x-8}{1-x}\)
d)\(\dfrac{3}{x+2}+\dfrac{6x}{4-x^2}\)
e)\(\dfrac{1}{a+1}+\dfrac{2}{1-a}+\dfrac{5a-1}{a^2-1}\)
GIÚP MÌNH VỚI MAI LÀ NỘP BÀI RỒI