Question

1.If x+1/x=2 ,then x^2019 -
1/x^2020
O A) 2
O B) 1
O C) 0
O D) -1​

Answer 1

Answer:

B) 1

Step-by-step explanation:

x + 1/x = 2

(x²+1)/x = 2

x² + 1 = 2x

x² - 2x + 1 = 0

(x - 1)² = 0

x = 1

x^2019/x^2020 = 1^2019/1^2020 = 1/1 = 1

Hope it helps you:)