1, Rút gọn các phân thức sau :
a, dfrac{5x}{10}
b, dfrac{4xy}{2y} ( y # 0)
c, dfrac{21x^2y^3}{6xy} ( xy # 0)
d, dfrac{2x+2y}{4}
e, dfrac{5x-5y}{3x-3y} ( x # y)
f, dfrac{-15xleft(x-yright)}{3left(y-xright)} ( x # y)
2, Rút gọn các phân thức sau :
a, dfrac{x^2-16}{4x-x^2} ( x # 0, x # 4)
b, dfrac{x^2+4x+3}{2x+6} ( x # -3)
c, dfrac{15xleft(x+3right)^3}{5yleft(x+yright)^2} ( y + ( x+y) # 0)
d, dfrac{5left(x-yright)-3left(y-xright)}{10left(x-yright)} ( x # y)
e, dfrac{2x+2y+5x+5y}{2x+2y-...
Đọc tiếp
1, Rút gọn các phân thức sau :
a, \(\dfrac{5x}{10}\)
b, \(\dfrac{4xy}{2y}\) ( y # 0)
c, \(\dfrac{21x^2y^3}{6xy}\) ( xy # 0)
d, \(\dfrac{2x+2y}{4}\)
e, \(\dfrac{5x-5y}{3x-3y}\) ( x # y)
f, \(\dfrac{-15x\left(x-y\right)}{3\left(y-x\right)}\) ( x # y)
2, Rút gọn các phân thức sau :
a, \(\dfrac{x^2-16}{4x-x^2}\) ( x # 0, x # 4)
b, \(\dfrac{x^2+4x+3}{2x+6}\) ( x # -3)
c, \(\dfrac{15x\left(x+3\right)^3}{5y\left(x+y\right)^2}\) ( y + ( x+y) # 0)
d, \(\dfrac{5\left(x-y\right)-3\left(y-x\right)}{10\left(x-y\right)}\) ( x # y)
e, \(\dfrac{2x+2y+5x+5y}{2x+2y-5x-5y}\) (x # -y)