Giải các phương trình và bất phương trình vô tỷ sau:
(4+x)(6−x)≤x −2x−12
2.32x− =1 x316−3 2x+1
3.3 x− +1 3 x− =2 3 2x−3
4 x+2 x+2 3x =x
2
x
x+ x− + x− x− = +
7 x+ −3 4 x− +1 x+ −8 6 x− =1 1
x− + − =x x − x+
9.3− − = −x 1 1 x+2
10 1+ +x 8− +x (1+x)(8−x) 3=
11.1 1 4x2 3
x
12.4(x+1)2 <(2x+10)(1− 3 2 )+ x 2
(4x−1) x + =1 2x +2x+1
14 x− + − ≥1 x 3 2(x−3)2+2(x−1)
15.3 x+ −7 x =1
16 x2− + +3x 3 x2− + =3x 6 3
17 5 3sin− 2−4cosx= −1 2cosx
18 3x2−7x+ −3 x2− =2 3x2−5x− −1 x2− +3x 4
19 x− 9− = − +x x2 9x+9
20 x+ =6 x2+4x
21 x− =4 x2+4
22 x+ =3 x2−6x+3
23.(x+3) x2+ =1 x2+3x+1
28
x
25 2x2+8x+ +6 x2− =1 2x+2
26 x2+5x+ >4 10x− x2−5x+4
27.3(2+ x−2) 2= x+ x+6
1−x =4x −3x
1−x +2 1−x =3
x x+ + − =x x +
5 x + =1 2(x +2)
32.3 x2−7x+ +8 3 x2−6x+ −7 32x2−13x−12 3=
33.6 63 x+ = −4 x3 4
34.3 x3+ =8 2(x2− +3x 2)
2x+ x+ x+ +7 2 x +7x <35
36 x 1 1 1 x
37 x2−2x+ −3 x2−6x+ >11 3− −x x−1 38
2
4 8 4
x
3
4
x + x= x+
2x − +1 x − − =3x 2 2x +2x+ +3 x − +x 2
41 2
42
2
2
4
21 (3 9 2 )
x
x
43
2
4
x
44.416− +x 41− =x 3
46 x−2 2x2− − ≥3x 5 0
5
x
x+ − x− = +
48.3 2 3 1 1
2
x
+
2x+ + − + =1 x 3x 1 0
x + = x− + x +
7x+ +7 7x− +6 2 49x +7x−42 181 14< − x
52.( ) ( ) 2
x+ x+ − x + x+ =
53 3x− +2 x− =1 4x− +9 2 3x2−5x+2
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