Question

(x + 1) is a factor of the polynomial​

Answer 1

Answer:

Let assume (x + 1) is a factor of x3 + x2 + x+1.

So, x = -1 is zero of x3 + x2 + x+1

(-1)3 + (-1)2 + (-1) + 1 = 0 ⇒ -1+1-1 + 1 = 0 ⇒ 0 = 0 Hence, our assumption is true.

Answer 2

Answer:

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