решите плиз (5a-2b)-(4a-3b)+2a (x-6)(x^2-1)-x^3

Question

решите плиз

(5a-2b)-(4a-3b)+2a

(x-6)(x^2-1)-x^3

Answer 1

1) 5а-2b-4a+3b+2a=3a+b; 2)x^3-x-6x^2+6-x^3=6x^2+x-6