pt phải có dấu bằng giữa hai vế chứ bạn hik như thiếu đề ạk bn ktra lại xem
=>(x-1)(x^2-2x+1-x^2-5x+2)=0
=>(x-1)(-7x+3)=0
=>x=3/7 hoặc x=1
giải pt: \(\dfrac{1}{\left(x-1\right)\left(x-2\right)}+\dfrac{1}{\left(x-3\right)\left(x-2\right)}=\dfrac{1}{\left(x-3\right)\left(x-4\right)}+\dfrac{1}{\left(x-1\right)\left(x-4\right)}\)
Giải PT
\(\frac{1}{\left(x+1\right)\left(x+2\right)}+\frac{1}{\left(x+2\right)\left(x+3\right)}+\frac{1}{\left(x+3\right)\left(x+4\right)}+\frac{1}{\left(x+4\right)\left(x+5\right)}=\frac{1}{x+1}-403\)
Giải PT sau:
1)\(\left(2x+7\right)^2=9\left(x+2\right)^2\)
2)\(\left(x^2-16\right)^2-\left(x-4\right)^2=0\)
3)\(\left(5x^2-2x+10\right)^2=\left(3x^2+10x-8\right)^2\)
1 Giari các PT:
a, \(\frac{2}{x+1}-\frac{1}{x-2}=\frac{3x-11}{\left(x-1\right)\left(x-2\right)}\)
b, \(\left(\frac{3}{2x+1}+2\right)\left(5x-2\right)=\frac{5x-2}{2x+1}\)
Giải pt sau
\(\left(\dfrac{x-1}{x+2}\right)^2-\left(\dfrac{2x+4}{x-3}\right)^2+3\left(\dfrac{x-1}{x-3}\right)=0\)
Giải pt
a)\(\left|-2x\right|=3x+4\)
b)\(\left|-1+5x\right|=8-x\)
c)\(\left|-2x+1\right|=x+3\)
d)\(\left|-2-5x\right|=-4x+7\)
giải pt sau
a)\(\left(x-2\right)\left(x-3\right)+2x=\left(x-2\right)^2-2\)
b) \(\left(x-1\right)^2+3x\left(x-1\right)+7=\left(2x-1\right)^2+5\left(x-3\right)\)
c)\(5\left(x^1-2x-1\right)+2\left(3x-2\right)=5\left(x+1\right)^2\)
d)\(\left(x-1\right)\left(x^2+x+1\right)-2x=x\left(x-1\right)\left(x+1\right)\)
1.giải các bpt sau
a.\(\left(x-3\right)\left(x+3\right)\ge x^2-7x+1\)
b.\(\dfrac{1,5-x}{5}\ge\dfrac{4x+5}{2}\)
2.giải các pt sau
\(x^3+1=x.\left(x+1\right)\)
Giải phương trình:
\(a,\left|-5x\right|=3x-16\)
\(b,\left|2x+1\right|=\left|x-1\right|\)
\(c,\left|2x+1\right|-\left|5x-2\right|=3\)
