Question

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A) (x³+x²-1)(x²-x+1)
B)(1-x)(1+x+x²)(1+x³+x^6)

Answer 1

A) (x³+x²-1)(x²-x+1)= x^5+ x^4+x+x^4-x³+x-x-x=  x^5+x^4-x³


B)(1-x)(1+x+x²)(1+x³+x^6)=
1+x+x+1+x+x-1-x²-x³-1-x^4-x^7+1+x+x+1+x^4+x^4+x+x^4+x^8= +x^8+x^4-x³+x²+7x+2