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Answer:

(x-1) (x^2 + 4x + 7)

Step-by-step explanation:

x ^ 3 + 3 x ^ 2 + 3 x - 7

= x^3 + 4x^2 + 7x - 1x^2 - 4x - 7

= x( x^2 + 4x + 7) - 1 (x^2 + 4x + 7)

= (x-1) (x^2 + 4x + 7)

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