Các câu hỏi tương tự
Thực hiện phép tính :
a) \(\dfrac{3x+2}{x^2}\div\dfrac{6x+4}{2x^2}\)
b) \(\dfrac{4xy}{x+y}\div\dfrac{6x^2y^3}{x^2-y^2}\)
Thực hiện phép tính:
a) \(\dfrac{x}{2x-y}-\dfrac{2x-y}{4x-2y}\)
b)\(\dfrac{3x+1}{x^2-1}-\dfrac{x}{2x-2}\)
c) \(\dfrac{x-2}{x^2-4}-\dfrac{-8-x}{3x^2+6x}\)
d) \(\dfrac{2}{2x-3}-\dfrac{x}{2x+3}-\dfrac{2x+1}{9-4x^2}\)
Thực hiện phép tính
1) (x-y).(6x2-4y2+\(\dfrac{1}{2}\)xy)
2) (6x-1).(3+x)+(2x+5).(-3x)
Thực hiện phép tính
1) (x-y).(6x2-4y2+\(\dfrac{1}{2}\)xy)
2) (6x-1).(3+x)+(2x+5).(-3x)
Thực hiện phép tính
a) \(\dfrac{2x}{x^2-6x+9}\)+\(\dfrac{x-2}{x-3}\)
b)\(\dfrac{x^2+2}{x^3-1}\)+\(\dfrac{2}{x^2+x+1}\)-\(\dfrac{1}{x-1}\)
Thực hiện phép tínha) ^{dfrac{x^2+2}{x^3-1}} +dfrac{2}{x^2+x+1} +dfrac{1}{1-x}b) dfrac{1}{x+2} +dfrac{3}{x^2-4} +dfrac{x-14}{left(x^2+4x+4right)left(x-2right)}c)dfrac{1}{x-y} -dfrac{3xy}{x^3-y^3} +dfrac{x-y}{x^2+xy+y^2}d) dfrac{1}{a-b} +dfrac{1}{a+b} +dfrac{2a}{a^2+b^2} +dfrac{4a^3}{a^4+b^4}e) dfrac{1}{a^2-a} + dfrac{1}{a^2-3a+2} +dfrac{1}{a^2-5a+6} +dfrac{1}{a^2-7a+12}
Đọc tiếp
Thực hiện phép tính
a) \(^{\dfrac{x^2+2}{x^3-1}}\) +\(\dfrac{2}{x^2+x+1}\) +\(\dfrac{1}{1-x}\)
b) \(\dfrac{1}{x+2}\) +\(\dfrac{3}{x^2-4}\) +\(\dfrac{x-14}{\left(x^2+4x+4\right)\left(x-2\right)}\)
c)\(\dfrac{1}{x-y}\) -\(\dfrac{3xy}{x^3-y^3}\) +\(\dfrac{x-y}{x^2+xy+y^2}\)
d) \(\dfrac{1}{a-b}\) +\(\dfrac{1}{a+b}\) +\(\dfrac{2a}{a^2+b^2}\) +\(\dfrac{4a^3}{a^4+b^4}\)
e) \(\dfrac{1}{a^2-a}\) + \(\dfrac{1}{a^2-3a+2}\) +\(\dfrac{1}{a^2-5a+6}\) +\(\dfrac{1}{a^2-7a+12}\)
BT10: Thực hiện phép tính
\(a,\dfrac{4}{5}y^2x^5-x^3.x^2y^2\)
\(b,-xy^3-\dfrac{2}{7}y^2.xy\)
\(c,\dfrac{5}{6}xy^2z-\dfrac{1}{4}xyz.y\)
\(d,15x^4+7x^4-20x^2.x^2\)
\(e,\dfrac{1}{2}x^5y-\dfrac{3}{4}x^5y+xy.x^4\)
\(f,13x^2y^5-2x^2y^5+x^6\)
Bài 2 . Thực hiện phép tính
a)\(6x^3\)\(\left(\dfrac{1}{3}x^2-\dfrac{5}{2}-\dfrac{1}{6}\right)\)\(-2x^5\)\(-x^3\)
b)\(\left(x-3\right)\left(x^2+3x-2\right)\)
c)\(\left(4x^3-4x^2-5x+4\right):\left(2x+1\right)\)
Thực hiện phép tính:a) dfrac{x+2y}{xy}divdfrac{x^2+4xy+4y^2}{2x^2}b) dfrac{4x^3-xy^2}{x^2+xy+y^2}divdfrac{left(2x-yright)^3}{x^3-y^3}c) dfrac{x+3}{x+2}divdfrac{3x+9}{2x-1}divdfrac{4x-2}{2x+4}d) dfrac{x+1}{x+2}divleft(dfrac{2x^2}{2x-3}timesdfrac{3x+3}{4x^3}right)
Đọc tiếp
Thực hiện phép tính:
a) \(\dfrac{x+2y}{xy}\div\dfrac{x^2+4xy+4y^2}{2x^2}\)
b) \(\dfrac{4x^3-xy^2}{x^2+xy+y^2}\div\dfrac{\left(2x-y\right)^3}{x^3-y^3}\)
c) \(\dfrac{x+3}{x+2}\div\dfrac{3x+9}{2x-1}\div\dfrac{4x-2}{2x+4}\)
d) \(\dfrac{x+1}{x+2}\div\left(\dfrac{2x^2}{2x-3}\times\dfrac{3x+3}{4x^3}\right)\)