1,015x-(3000000-x)=500000
\(\Rightarrow-\left(3000000-x\right)=500000:1,015\Rightarrow-\left(3000000-x\right)=492610,8374\Rightarrow-3000000+x=492610,8374\Rightarrow x=492610,8374-3000000\Rightarrow x=3492610,8374\)
vậy...
giai phuong trinh
a) x+1/x^2+x+1 - x-1/x^2-x+1 = 3/x(x^4+x^2+1)
b) x+2/x^2+2x+4 - x-2/x^2-2x+4 = 6/x(x^4+4x^2+16)
Giải phương trình:
a) (x + 5)(x + 2) = 3(4x - 3) + (x - 5)2
b) 12 - 2(1 - x)2 = 4(x - 2) - (x - 3)(2x - 5)
c) (x - 3)3 - 2(x - 1) = x(x - 2)2 - 5x2
d) x(x + 3)2 - 3x = (x + 2)3 + 1
Giải các phương trình
1, \(\dfrac{1}{x}-\dfrac{2}{x+1}=\dfrac{3}{x^2+x}\)
2, \(\dfrac{x+2}{x-2}-\dfrac{1}{x}=\dfrac{2}{x\left(x-2\right)}\)
3, \(\dfrac{x-2}{x+2}-\dfrac{3}{x-2}=\dfrac{2\left(x-11\right)}{x^2-4}\)
giải phương trình sau
a)(x^2+x+1)(x^2+x+2)=12
b)x(x+1)(x^2+x+1)=42
c)x(x+1)(x-1)(x+2)=24
d)(x^2+1)^2+3x(x^2+1)+2x^2=0
giải pt
\(\dfrac{x-1}{x+1}-\dfrac{x^2+x-2}{x+1}=\dfrac{x+1}{x-1}-x-2\)
Giải các phương trình:
a) \(\frac{2x}{x-1}-\frac{x}{x-2}=\frac{x^2}{\left(x-1\right)\left(x-2\right)}\)
b) \(\frac{1}{x+2}-\frac{6}{x-1}+\frac{8}{\left(x+2\right)\left(x-1\right)}=0\)
c) \(\frac{x+2}{x+3}-\frac{x+1}{x-1}=\frac{4}{\left(x+3\right)\left(x-1\right)}\)
d) \(\frac{x-1}{x+2}-\frac{x+1}{x-2}=\frac{x-3}{4-x^2}\)
Giải các phương trình sau
1)\(\dfrac{x+1}{85}+\dfrac{x+3}{83}=\dfrac{x+5}{81}+\dfrac{x+7}{79}\)
2)\(\dfrac{x-1}{2015}-\dfrac{x+3}{2011}=\dfrac{x+7}{2007}-\dfrac{x+11}{2003}\)
3)\(\dfrac{x+4}{4}-\dfrac{x-3}{6}=\dfrac{x}{3}\)
4)\(x-\dfrac{x+1}{3}=\dfrac{2x+1}{5}\)
5) \(\dfrac{2x-7}{5}+\dfrac{x+11}{2}=-4\)
giúp em vs ạ, em đang cần gấp
em c.ơn trước ạ
a) (x+1)(x+9)=(x+3)(x+5)
b) (x+2)^2 + 2(x-4)=(x-4)(x-2)
C= 3x^2-x+2/(x-1) (x+3) +x/x-1 -x-1/x+3
