Question

(1+w^4)(1+w^8)=?
give explaination​

Answer 1

Answer:

$\left(1+w^4\right)\left(1+w^8\right)\\= 1\cdot \:1+1\cdot \:w^8+w^4\cdot \:1+w^4w^8\\= 1\cdot \:1+1\cdot \:w^8+1\cdot \:w^4+w^8w^4\\= w^{12}+w^8+w^4+1$

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