Question

a) (2x -4)³ = 8                     b) 720 : [41 -(2x-5)]=2³. 5

Answer 1

\(\left(2x-4\right)^3=8=2^3\)

\(2x-4=2\)

\(2x=6\)

\(x=3\)

Answer 2

a) (2x -4)³ =2³                                                                           b)

=>2x -4 =2

2x =6

x     =3

Answer 3

a) ( 2x - 4 )³ = 8

=>( 2x - 4 )³ = 2³

=> 2x - 4 = 2

=> 2x = 6

=> x = 3

b) 720 : [ 41 - ( 2x - 5 ) ] = 2³ . 5

=> 720 : [ 41 - ( 2x - 5 ) ] = 40

=> 41 - ( 2x - 5 ) = 18

=> 2x - 5 = 23

=> 2x = 28

=> x = 14