Bài Tập Phương Trình Mũ – Logarit
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3x 1 x 2
6 − =216 7x2+ −x 2 =1
x 1 x 1 2x 5
3
27
3x 2
1 16
2
3 − =9 25x2− +x 2=53x 2− 2
x 3
2
2
− +
=
2
2
x 2x
x 1
5
25
−
=
6
216
2
10
100
3
243
0, 4 = 6, 25 − 2 3.3x x 2− 5x 1+ =1500
5 + −3.5 − =550 2x 1 x 1−.5 − =0.001.102x 5+
3
x
x 2
3 5 =225
=
=
x272x 1− = 92x 1− 5 x −51− x + =4 0
x
3 −8.3 +15=0
3
27
− −
= 3x2−15 =9x 9x2−2x =3x 3− 3x 2
x 3
1 5
5
−
−
=
3x 2 1
2
8
2
2 x
+
4.9 − =3 2 + 2x 3− =5x2−5x 6+
x 1
−
+ = 2x 1 x+.5 =2.102x 5+ 2 3x x 1 x 2−.5 − =12
2
x 6x 2,5
2 − − =16 2 2x 1− +2x 1− +2x 2− = −3x 1− +3x +3x 2− 4x +2x− =6 0
9 −8.3 − − =1 0 22x 1+ −5.2x + =2 0 3.9x 1− −24.3x 2− + =4 0 9x 1+ +3x 2+ =4
5
3 + −4.3 + +27=0 x 1,5 x x 1
4 + +9 =6 +
4 −9.2 + =8 0 42x 3− −3.4x 2− − =1 0 4x +2x 1+ =80 132x−6.13x+ =5 0
1
x
x
2
16 + =15.4 +4 62x 8.6− x+ =12 0 22x 1+ +2x 2+ =16 4x −9.2x + =8 0
3 + +3 − =0
2 + −2 − =15 5x 1+ +51 x− =26 2x 1+ +22 x− =9 4x +9x =2,5.6x
4.2 −6 =18.3
2− 3 + 2+ 3 =4 25−x +5− +x 1=50
3
64 −2 + +12=0
25 −6.5 + +5 =0 32x 4+ +45.6x −9.22x 2+ =0 6.9x −13.6x+6.4x =0
5.2 − −3.2 − + =7 0 9x 1+ +3x 2+ −18=0
Trang 2x x x
4 − +16=2 − 1
2
1
2
+
3.49 +2.14 −4 =0
3
2
1
3
log x +3x−4 =log 2x+2 l o g x 1l o g x 1( )
2
log 10 log 10 6− − =0
5
log x −11x+43 =2
log 2x − +x 3 =log 2x 1+ logx 1− 4=2
x
x
log 2x −3x−4 =2
x 1
x
x 1
log − 3x −7x−2 =2
5 x
+
2
1
−
log x −7x 1− =log 5 2x−
log x − =1 log x 1+ log3x 2x( − =5) 1
2 log x −5log 9x+ =3 0
log x+3 −2 log x−2 =log 0, 4 log4(x+2)−log4(x−2)= −2 log 84
2
2 log x+log x+log x=9
log x 1+ −log 1 x− =log 2x+3 log7(x−2)−log7(x+2)= −1 log7(2x−7)
2
5 4.log x +1 log x =
3
log x−log x+log x=6
7 log x+11 log x =12
1
2 log x+4 log x =
2
4 log x +log x =
−
7
6
2
2
log x+3log x+log x=2
x
log x 1− = +3 log x 1−
log x+ =3 2.log x log x2 3−10log x 1+ =0
2
5
3
5
3
log 5+log 5x−2, 25=log 5
3.log 16 4.log− x=2.log x log 16 log xx − 2 + =3 0 2 log x5 −log 125 1x − =0
log 10 log 10 6 log 10− − =0 4 log x− =3 log x 2 log x23 −5log 9x3 + =3 0
1
2
log x−3 log x+ =2 0