a, 4x+1=13-2x <-->6x=12 <-->x=2
b, (2x-5)(x-4)=0 <-->x=5/2 hoặc x=4
c,Đề bài -->x(x-2)+6(x+2)=2x+12 -->x^2+2x=0 -->x=0 hoặc x=-2
d,|x-3|=9-2x -->TH1: x-3=9-2x -->x=x=4 TH2:3-x=9-2x -->x=6
giải phương trình:
a,x(x+3)-(2x-1).(x+30)=0
b,x(x-3)-5(x-3)=0
c,\(\dfrac{1}{x+1}+\dfrac{5}{x-2}=\dfrac{3x}{\left(x+1\right)\left(x-2\right)}\)
d,\(\dfrac{x-1}{x+1}+\dfrac{x+1}{x-1}=\dfrac{4-2x^2}{\left(1-x^2\right)}\)
Bài 1 giải phương trình:
a) (4x2+4x+1)-x2=0
b) x2-2x+1=4
c) x2-5x+6=0
Bài 2: giải phương trình
a) \(\dfrac{2x-5}{x+5}\)= 3
b) \(\dfrac{5}{3x+2}\)= 2x-1
c) \(\dfrac{x^2-6}{x}\)= x+\(\dfrac{3}{2}\)
d) \(\dfrac{1}{x-2}\)+3= \(\dfrac{x-3}{2-x}\)
e) \(\dfrac{3x-2}{x+7}\)=\(\dfrac{6x+1}{2x-3}\)
f) \(\dfrac{x-2}{x+2}\) - \(\dfrac{3}{x-2}\)=\(\dfrac{2\left(x-11\right)}{x^2-4}\)
Giải phương trình:
a) \(\dfrac{x+5}{3x-6}-\dfrac{1}{2}=\dfrac{2x-3}{2x-4}\)
b) \(\dfrac{12}{1-9x^2}=\dfrac{1-3x}{1+3x}-\dfrac{1+3x}{1-3x}\)
c) \(\dfrac{x+1}{x-2}-\dfrac{5}{x+2}=\dfrac{12}{x^2-4}+1\)
Giải phương trình sau :
a,\(\dfrac{7-3x}{12}+\dfrac{5x+2}{7}=x+13\)
b,\(\dfrac{3\left(x+3\right)}{4}-\dfrac{1}{2}=\dfrac{5x+9}{7}-\dfrac{7x-9}{4}\)
c,\(\dfrac{2x+1}{3}-\dfrac{5x+2}{7}=x+3\)
d,\(\dfrac{2x-3}{3}-\dfrac{2x+3}{7}=\dfrac{4x+3}{5}-17\)
1) GIẢI phương trình :
a) 2x-6=0
b) x2-4x=0
c)\(\dfrac{x+2}{x-3}\)-\(\dfrac{3}{x}\)=\(\dfrac{x+9}{x^2-3x}\)
d) \(\dfrac{x-1}{2}\)-\(\dfrac{x-2}{3}\)=x-\(\dfrac{x-3}{4}\)
giải chi tiết giúp mik ah
Giải phương trình:
a)\(2x^3+4x^2+10x=0\)
b)\(\dfrac{x^2-4x}{x^2-5x+4}-\dfrac{1}{2}=\dfrac{x+1}{x-3}\)
giải các phương trinh sau
1/ \(\dfrac{4x-4}{3}-\dfrac{7-x}{5}\)
2/ \(\dfrac{3x-9}{5}=\dfrac{3-x}{2}\)
3/ \(\dfrac{2x-1}{5}-\dfrac{3-x}{3}=1\)
4/ \(\dfrac{x-5}{3}+\dfrac{3x+4}{2}=\dfrac{5x+2}{6}\)
5/ \(\dfrac{x-3}{2}+\dfrac{2x+3}{5}=\dfrac{2x+5}{10}\)
1) giải các phương trình:
a) 11-2x=x-1
b) \(\dfrac{3x+2}{2}\)-\(\dfrac{3x+1}{6}\)=2x+\(\dfrac{5}{3}\)
c) \(\dfrac{x}{2x-6}\)+\(\dfrac{x}{2x+2}\)=\(\dfrac{-2x}{\left(3-x\right).\left(x+1\right)}\)
GIẢI CHI TIẾT AH
Giải các phương trình sau:
a) 2,3 - 2(0,7 + 2) = 3,6 - 1,7x
b) \(\dfrac{5x+7}{4}-\dfrac{3x+5}{8}=\dfrac{4x+9}{5}-\dfrac{x-9}{3}\)
c) \(\dfrac{2x-1}{4}+\dfrac{x-3}{3}=\dfrac{4x-2}{3}-\dfrac{6x+7}{12}\)
d) (x - 1)(x + 2) - x(x + 3) = 8
