Question

Simplify: (a+1) (a+2) (a+3)​

Answer 1

Answer:

= (a+1)(a+2)(a+3)

= a(a+2)(a+3)+ 1(a+2)(a+3)

= (a+3).a^2+2a(a+3)+1(a+2)(a+3)

= a^3+3a^2+2a(a+3)+1(a+2)(a+3)

= a^3+3a^2+2a^2+6a+1(a+2)(a+3)

= a^3+5a^2+6a+1(a+2)(a+3)

= a^3+5a^2+6a+(a+2)(a+3)

= a^3+5a^2+6a+a(a+3)+2(a+3)

= a^3+5a^2+6a+a^2+3a+2(a+3)

= a^3+5a^2+6a+a^2+3a+2a+6

= a^3+5a^2+6a+a^2+5a+6

= a^+6a^2+6a+5a+6

= a^3+6a^2+11a+6

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