Question

Please help me out I really can’t afford failing this test

Answer 1

I'm not really sure but I think it's 2

Explanation:

So here's what I did;

x³+3x-9=x - 1 +2x

x³+3x - x -2x = 9 - 1

x³= 8

x = ³√8

x = 2

I hope this helps