BD Merit - Freelancing, BCS, Bank, Primary, Admission, NTRCA

Discuss Forum

1. $x^{4} - 2 x^{2} + 1 = 0$

Answer: Option A

Explanation:

x^{4} - 2 x^{2} + 1 = 0 \Rightarrow (x^{2})^{2} - 2 x^{2} . 1 + (1)^{2} = 0 \Rightarrow (x^{2} - 1)^{2} = 0 \Rightarrow x^{2} = 1 \Rightarrow x = \pm 1

x = 1 [ঋণাত্মক মান বর্জন করে পাই]

Post your comments here:

Name:

Mobile:

Email:(Optional)

» Your comments will be displayed only after manual approval.