\(\dfrac{x^2-y^2}{6x^2y}:\dfrac{x+y}{3xy}\)
\(=\dfrac{x^2-y^2}{6x^2y}.\dfrac{3xy}{x+y}\)
\(=\dfrac{3xy\left(x^2-y^2\right)}{6x^2y\left(x+y\right)}\)
\(=\dfrac{3xy\left(x-y\right)\left(x+y\right)}{6x^2y\left(x+y\right)}\)
\(=\dfrac{x-y}{2x}\)
\(\dfrac{x^2-y^2}{6x^2y}:\dfrac{x+y}{3xy}\)
\(=\dfrac{x^2-y^2}{6x^2y}.\dfrac{3xy}{x+y}\)
\(=\dfrac{3xy\left(x^2-y^2\right)}{6x^2y\left(x+y\right)}\)
\(=\dfrac{3xy\left(x-y\right)\left(x+y\right)}{6x^2y\left(x+y\right)}\)
\(=\dfrac{x-y}{2x}\)
Tìm Q biết :
a) \(\dfrac{x-y}{x^3+y^3}.Q=\dfrac{x^2-2xy+y^2}{x^2-xy+y^2}\)
b) \(\dfrac{x+y}{x^3-y^3}.Q=\dfrac{3x^2+3xy}{x^2+xy+y^2}\)
Rút gọn biểu thức :
a) \(\dfrac{x^4-xy^3}{2xy+y^2}:\dfrac{x^3+x^2y+xy^2}{2x+y}\)
b) \(\dfrac{5x^2-10xy+5y^2}{2x^2-2xy+2y^2}:\dfrac{8x-8y}{10x^3+10^3}\)
tính
\(\dfrac{x^{4^{ }}-xy^3}{2xy+y^2}:\dfrac{x^3+x^2y+xy^2}{2x+y}\)
Rút gọn biểu thức
Q=\(\left(\left(\dfrac{x-y}{2y-x}-\dfrac{x^2+y^2+y-2}{x^2-xy-2y^2}\right):\dfrac{4x^4+4x^2y+y^2-4}{x^2+y+xy+x}\right):\dfrac{x+1}{2x^2+y+2}\)
R=\(\left(5-2x^2\right):\left(\dfrac{1+x+x^2}{2x+x^2}+2-\dfrac{1-x+x^2}{2x-x^2}\right)\)
Các bạn làm gấp nha bài nào cũng được mình đang cần gấp làm rồi mình tick cho
Thực hiện phép tính:
(\(\dfrac{x}{y^2-xy}\)+\(\dfrac{y}{x^2-xy}\)):\(\dfrac{x^2+y^2}{xy^2+x^2y}\)
Hãy làm các phép chia sau :
a) \(\dfrac{7x+2}{3xy^3}:\dfrac{14x+4}{x^2y}\)
b) \(\dfrac{8xy}{3x-1}:\dfrac{12xy^3}{5-15x}\)
c) \(\dfrac{27-x^3}{5x+5}:\dfrac{2x-6}{3x+3}\)
d) \(\left(4x^2-16\right):\dfrac{3x+6}{7x-2}\)
e) \(\dfrac{3x^3+3}{x-1}:\left(x^2-x+1\right)\)
\(\dfrac{1-2x}{6x^2y}+\dfrac{3+2y}{6x^2y}+\dfrac{2x-4}{6x^2y}\)
1. a,\(\dfrac{2}{3}xy\left(3x^2y-3yx+y^2\right)\) b.(2x+1) (6x3 - 7x2 - x + 2)
c. (25x5-5x4+10x2): 5x2 d.(x2 - 2x + 1) : (1 - x)
giúp mk vs mai thi rồi
Thực hiện phép tính ( với x ≠ 3 và x ≠ -3)
\(\left\{\dfrac{1}{x^2+6x+9}-\dfrac{1}{x^2-6x+9}\right\}:\left\{\dfrac{1}{x+3}+\dfrac{1}{x-3}\right\}\)