Question

4.x^3+15=47

Answer 1

=> \(4.x^3=47-15=32\)

=> \(x^3=32:4=8\)

<=> \(x^3=2^3\)

=> x = 2

Answer 2

\(4.x^3+15=47\)

\(4.x^3=47-15\)

\(4.x^3=32\)

\(x^3=32:4\)

\(x^3=8\)

\(x^3=2^3\)

\(=>x=2\)

Answer 3

\(4.x^3+15=47.\)

\(4.x^3=47-15.\)

\(4.x^3=32.\)

\(x^3=32:4.\)

\(x^3=8.\)

\(x^3=2^3.\)

Vậy \(\Rightarrow x=2.\)

Answer 4

`4.x^3 + 15 = 47`

`=> 4.x^3    = 47 - 15`

`=> 4.x^3    = 32`

`=>    x^3    = 32  : 4`

`=>   x^3     = 8`

`=> x^3       = 2^3`

`=> x=2`

Answer 5

\(4\cdot x^3+15=47\)

\(4\cdot x^3=47-15\)

\(4\cdot x^3=32\)

\(x^3=\dfrac{32}{4}\)

\(x^3=8\)

\(x^3=2^3\)

`=>x=2`

Answer 6

4 x x³=32

x³=32:4=8

x=2