Bài 1:Giải phương trình sau:
1, x-8=3-2 (x+4)
2, 2 (x+3)-3 (x-1)=2
3, 4(x-5)-(3x-1)=x-19
4, 7-(x-2)=5 (2x-3)
5, 32-4(0,5y-5)=3y +2
6, 3 (x-1)-x=2x-3
Bài 2: Giải phương trình sau:
1, 2-x/3=3-2x/5
2, 3-4x/4=x+2/5
3, 2x-1/3+x=x+4/2
4, 1+2x-5/6=3-x/4
5, x-3/5+1-2x/3=-6
6, 3x-5/5+x/4=1/20
Bài 3: Giải các phương trình sau:
1, x^2-7x=0
2, 2x(x+3)+5(x+3)=0
3, 3x(x-1)+6 (x-1)=0
4, 3x(2x-8)-(2x-8)^2=0
Giải các phương trình tích sau: Mng giúp em với ạ.
a) (3x – 2)(4x + 5) = 0 b) (2,3x – 6,9)(0,1x + 2) = 0
c) 2x(x – 3) + 5(x – 3) = 0 d) (3x – 1)(x2 + 2) = (3x – 1)(7x – 10)
e) (x + 2)(3 – 4x) = x2 + 4x + 4 f) x(2x – 7) – 4x + 14 = 0
g) (2x – 5)2 – (x + 2)2 = 0 h) (x2 – 2x + 1) – 4 = 0
i) 3x2 + 2x – 1 = 0 k) x2 – 5x + 6 = 0
l) x2 – 3x + 2 = 0 m) 2x2 – 6x + 1 = -3
Giair các phương trình sau
\(a,\dfrac{3x^2+7x-10}{x}=0\) \(b,\dfrac{4x-17}{2x^2+1}=0\) \(c,\dfrac{\left(x^2+2x\right)-\left(3x-6\right)}{x+2}=0\)
\(d,\dfrac{x^2-x-6}{x-3}=0\) \(e,\dfrac{2x-5}{x+5}=3\) \(f,\)\(\dfrac{5}{3x+2}=2x-1\)
\(g,\dfrac{x^2-6}{x}=x+\dfrac{3}{2}\) \(h,\dfrac{4}{x-2}-x+2=0\)
Giups mình với , mik đang cần gấp
1. 3y = 0
2. 1+x=0
3. 1-2t=0
4. 2x+x+3=0
5. 25x-20=0
6. 51x=17
7. 2x-3=x+5
8. x-8=2x+3
9. 17-2x=3x-5
10. 2x+x+22=0
11. x-3=3x+5
12.15x+1/2=0
13. 3x+1=7x-11
14. 5-3x=6x+7
15. 11-2x=x-1
16. 15-8x=9-5x
17. 25-3x=4x-5
18. 0,25x+1,5=0
19. 3x-5/6=1/2
20. -2x+14=0
giúp mik nha chìu nay mik cần gấp
thanks
Giải các phương trình sau :
a) \(\dfrac{9x-0,7}{4}-\dfrac{5x-1,5}{7}=\dfrac{7x-1,1}{3}-\dfrac{5\left(0,4-2x\right)}{6}\)
b) \(\dfrac{3x-1}{x-1}-\dfrac{2x+5}{x+3}=1-\dfrac{4}{\left(x-1\right)\left(x+3\right)}\)
c) \(\dfrac{3}{4\left(x-5\right)}+\dfrac{15}{50-2x^2}=-\dfrac{7}{6\left(x+5\right)}\)
d) \(\dfrac{8x^2}{3\left(1-4x^2\right)}=\dfrac{2x}{6x-3}-\dfrac{1+8x}{4+8x}\)
Giải phương trình:
1. 5-(6-x)=4(3-2x)
2. (x+1)(x+9)=(x+3)(x+5)
3. \(\dfrac{3\left(5x-2\right)}{4}\) -2=\(\dfrac{7x}{3}\)-5(x-7)
4. 3(x+1)(2x+5)=3(x+1)(7x-4)
5. (x-2)2-(3x+1)2+x(4x-1)=0
Giải các phương trình :
a) \(3-4x\left(25-2x\right)=8x^2+x-300\)
b) \(\dfrac{2\left(1-3x\right)}{5}-\dfrac{2+3x}{10}=7-\dfrac{3\left(2x+1\right)}{4}\)
c) \(\dfrac{5x+2}{6}-\dfrac{8x-1}{3}=\dfrac{4x+2}{5}-5\)
d) \(\dfrac{3x+2}{2}-\dfrac{3x+1}{6}=2x+\dfrac{5}{3}\)
câu 1:giải các pt và bpt sau: a,17x - 5(x+3)= 2x + 5 b,3/x+2 - 5/x-2 = 11x + 23/(x+2)(x-2) c,5x + 7 ≥ 3(x-1) d,3x-1/x+1 = -2/5 e,(2x-1)(2x+1)= 4x2 + 3x + 2 f,x-3^3 -7+3x g,7x-5 < 2(4x-1)+7
k) 8 - \(\dfrac{x-2}{2}\) = \(\dfrac{x}{4}\)
m) \(\dfrac{3x+2}{2}\) - \(\dfrac{3x+1}{6}\) = 2x + \(\dfrac{5}{3}\)
n) \(\dfrac{x+1}{7}\)+ \(\dfrac{x+2}{6}\) = \(\dfrac{x+3}{5}\) + \(\dfrac{x+4}{4}\)
o) \(\dfrac{x+5}{6}\) + \(\dfrac{x+6}{5}\) = x + 9
