Question

\(\left(3x-1\right)^3=125\)

 

 

Answer 1

(x-15):5+22=24

(x-15):5=22+24

(x-15):5=46

x-15=46.5

x-15=230

x=230+15

x=245

3^x.5=405

3^x=405:5

3^x=81

=>x=4

(3x-1)^3=125

Answer 2

(x-15):5+22=24

=>(x-15):5=24-22

=>(x-15):5=2

=>x-15=2x5

=>x-15=10

=>x=10+15

=>x=25

3^x.5=405

=>3^x=405:5

=>3^x=81

Mà: 3⁴=81

=> 3^x=3⁴=81

=>x=4

(3x-1)³=125

=> 3x-1=5

=>3x=5+1

=>3x=6

=>x=6:3

=>x=2

Answer 3

(x-15):5+22=24

=>(x-15):5=24-22

=>(x-15):5=2

=>x-15=2x5

=>x-15=10

=>x=10+15

=>x=25

3^x.5=405

=>3^x=405:5

=>3^x=81

Mà: 3⁴=81

=> 3^x=3⁴=81

=>x=4

(3x-1)³=125

=> 3x-1=5

=>3x=5+1

=>3x=6

=>x=6:3

=>x=2

Answer 4

(x-15):5+22=24

=>(x-15):5=24-22

=>(x-15):5=2

=>x-15=2x5

=>x-15=10

=>x=10+15

=>x=25

3^x.5=405

=>3^x=405:5

=>3^x=81

Mà: 3⁴=81

=> 3^x=3⁴=81

=>x=4

(3x-1)³=125

=> 3x-1=5

=>3x=5+1

=>3x=6

=>x=6:3

=>x=2

Answer 5

(x-15):5+22=24

=>(x-15):5=24-22

=>(x-15):5=2

=>x-15=2x5

=>x-15=10

=>x=10+15

=>x=25

3^x.5=405

=>3^x=405:5

=>3^x=81

Mà: 3⁴=81

=> 3^x=3⁴=81

=>x=4

(3x-1)³=125

=> 3x-1=5

=>3x=5+1

=>3x=6

=>x=6:3

=>x=2