Question

hello guyz plz answer the questions fastly!!!​

Answer 1

$8)f(x) = {x}^{3} + 3 {x}^{2} + 3x + 1 \\ \\ x + 1 = 0 \\ \\ x = - 1 \\ \\ f(x) = - 1 + 3 - 3 + 1 \\ \\ = 0$

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