Question

If A = {x ∶ x ∈ R and x^3 − x^2 + x − 1 = 0}, then find n(A).​

Answer 1

Answer:

1

Step-by-step explanation:

x³ - x² + x - 1 = 0

(x - 1)³ = 0

x - 1 = 0

x = 1

.

So n(A) = 1