1.

Factorize the questions number "c" polynomial by regrouping ​

Answer»

X^3 + x^2 +xy + x + y + 1

= (x^3 + x^2) + (xy + y) + (x + 1)

= x^2(x + 1) + y(x + 1) + 1(x + 1)

= (x + 1) (x^2 + y + 1)

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