Question

Need help on last question

Answer 1

Explanation:

so let the equation equal 13

13 = 3
`x^(3)`-12x+13

so when ever 3
`x^(3)`-12x=0 then this is equation is true, soooo

x (3
`x^(2)` - 12) =0

so when x = 0 this is true, but also when

3
`x^(2)`-12=0 also

3
`x^(2)` = 12

`x^(2)` = 4

x = 2

so when x = 2 or -2 or 0 , then this is true