Question

If x²- 20x + 91 ≤ 0 , then which of the following can never be the value of x³ - 3x² + 3x - 1 ?​

Answer 1

Answer:

x

3

+3x

2

+3x+1=0

⇒(x+1)

3

=0

⇒x=−1,−1,−1

All the roots are equal.

Step-by-step explanation:

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