There's an algebra problem I've been working on - I've got as far as I can. My tutor says my answer is correct but can be simplified down to his answer - but I can't see how. If anyone can explain the steps on how to simplify to the answer I'd be really grateful!
(x+3)x^2(2) - (2x+7)[(x+3)2x + x^2]
My tutor's simplified answer:
-6x^3 -12x^2 - 13x -42