x²+1=√2x হলে x²+1/x² = কত?
Solution
Correct Answer: Option C
দেওয়া আছে ,
x²+1=√2x
বা, ( x²+1)/x=√2
বা, x+(1/x) =√2
এখন , x²+1/x² =(x)²+(1/x)²
=(x+1/x)²-2.x.1/x
=(√2)²-2
=2-2
=0
x²+1=√2x
বা, ( x²+1)/x=√2
বা, x+(1/x) =√2
এখন , x²+1/x² =(x)²+(1/x)²
=(x+1/x)²-2.x.1/x
=(√2)²-2
=2-2
=0
Practice More Questions on Our App!
Download our app for free and access thousands of MCQ questions with detailed solutions