Question

Find the product of abc and a -1b -1 c -1

Answer 1

Answer:

Step-by-step explanation:

abc[a-1][b-1][c-1]

= abc[ab-a-b+1][c-1]

= abc[abc-ac-bc+c-ab+a+b-1]

= abc[abc-ab-ac-bc+a+b+c-1]

= [a^2b^2c^2]-[a^2b^2c]-[a^2bc^2]-[ab^2c^2]+[a^2bc]+[ab^2c]+[abc^2]-[abc]