PHƯƠNG TRÌNH VÔ TỈ1.
Trang 1PHƯƠNG TRÌNH VÔ TỈ
1 x+ +3 3x+ =1 2 x+ 2x+2
2
3
2 1
3
x
+
3 x2 +12 5 3+ = x+ x2 +5
4 3 x2 − + =1 x x3−1
5 2x2 + + +x 9 2x2− + = +x 1 x 4
6 3 x+ +1 3 x+ = +2 1 3 x2+3x+2
7 3 x+ +1 3 x2 =3 x+3 x2 +x
8 x+ +3 2x x+ =1 2x+ x2+4x+3
3
x
x
+
3
x
x
+
11 2 x+ =3 9x2− −x 4
3
2 3 9+ x x+2 =2x+3 3x x+2
13 x− x2− +1 x+ x2− =1 2
14 2x2−6x− =1 4x+5
15 x+ 5+ x− =1 6
x
18 x2+ 3 x4−x2 =2x+1
19 2(x2+2) =5 x3+1
3
21 2x2+5x− =1 7 x3 −1
22 3 2 ( )3
23 x2+3 x2− =1 x4 − +x2 1
24 x2 +2x+ 2x− =1 3x2+4x+1
Trang 225 5x2−14x+ −9 x2− −x 20 5= x+1
x+ x − x+ =x +
x+ x − x+ =x +
28 x= 2−x 3− +x 3−x 5− +x 5−x 2−x
29 2x2 − +1 x2−3x− =2 2x2 +2x+ +3 x2 − +x 2
30 x325−x x3( +325−x3) =30
2 1
2
32 x+ 5+ x− =1 6
3
34 2x2−6x− =1 4x+5
35 4x2+ −5 13x+ 3x+ =1 0
36 2 2
9
+
13 x −x +9 x +x =16
38 x3−4x2−5x+ =6 37x2 +9x−4
3 3
x
40 3 6x+ =1 2x
41 2
2
1 1
1
x
x
+
−
2 2 2
2
2
1 1
1
x x
x
+ +
−
x+ x − x+ =x +
4 x+ − =1 1 3x+2 1− +x 1−x
46 2 2x+ +4 4 2− =x 9x2+16
x+ x − x+ =x +
48 x − − 2 x + = 2 2 x2 − − 4 2 x + 2
Trang 349. 3(2−x)2 +3(7 +x)2 3− (7 x−)(2 x−) 3=
50 x2 + x + = 7 7
BẤT PHƯƠNG TRÌNH VÔ TỶ