Question

2(x-51)=2x2³+20 

giúp mk nha các bn

 

Answer 1

`2(x-51) = 2*2^3+20`

`=>2(x-51) = 2*8+20`

`=>2(x-51) =16+20`

`=>2(x-51) =36`

`=> x-51=36:2`

`=>x-51= 18`

`=>x=18+51`

`=> x= 69`

Answer 2

\(2\left(x-51\right)=2\cdot2^3+20\)

\(x-51=2^3+10\)

\(x-51=18\)

\(x=18+51\)

\(x=69\)

Answer 3

\(2(x-51)=2\cdot2^3+20\\2(x-51)=2\cdot8+20\\2(x-51)=16+20\\2(x-51)=36\\x-51=36:2\\x-51=18\\x=18+51\\x=69\)