(а+3)(81-27а+9а²-3а³+а⁴)

Question

(а+3)(81-27а+9а²-3а³+а⁴)

Comments

Упростить?

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да

Answer 1

(а+3)(81-27а+9а^2-3a^3+a^4)=
=81a-27a^2+9a^3-3a^4+a^5+243-81a+27a^2-9a^3+3a^4=
=a^5+243