Question

Which expression has the greatest value when x=3?

1. 2x'3 2. 2x'3 +5 3. (2x)'3 4. (x-1)'3
The '3 means to the power of 3 Thanks♡​

Answer 1

3)
`(2x)^(3)`

Explanation:

x = 3

1)
`2x^(3)`

2 x
`3^(3)`

= 54

2)
`2x^(3) + 5`

2 x
`3^(3)` + 5

= 59

3)
`(2x)^(3)`

(2 x 3
`)^(3)`

`6^(3)`

=216

4)
`(x - 1)^(3)`

(3 - 1
`)^(2)`

`2^(3)`

= 8