Question

(a-b) (a square +ab+b square ) -(2a-3b)​

Answer 1

Answer:

(a^3-b^3-21+3b)

Step-by-step explanation:

(a-b)(a^2+ab+b^2)-(2a-3b)

=(a^3+a^2b+ab^2-a^b-ab^2-b^3)-2a+3b

=(a^3-b^3-21+3b)