Answer:
Step-by-step explanation:
i solve (a)
put x=2
3(2)³-4(2)²-5(2)+2=3(8)-16-10+2=24-26+2=0
so x=2 is one solution.
divide by 2 synthetically
2 |3 -4 -5 2
| 6 4 -2
|-------------------
3 2 -1 |0
3x²+2x-1=0
3x²+3x-x-1=0
3x(x+1)-1(x+1)=0
(x+1)(3x-1)=0
x=-1,1/3
so solutions are -1,1/3,2
