\(x^4-10x^2+9=0\) के वास्तविक हल कौनसे हैं?
What are the real solutions of \(x^4-10x^2+9=0\)?
Explanation opens after your attempt
Correct Answer
A. \(x=\pm1,\pm3\)
Concept
From \(y^2-10y+9=0\), (y=1,9), so \(x^2=1,9\) and \(x=\pm1,\pm3\). In exams, do not forget to return to (x).
Why this answer is correct
The correct answer is A. \(x=\pm1,\pm3\). From \(y^2-10y+9=0\), (y=1,9), so \(x^2=1,9\) and \(x=\pm1,\pm3\). In exams, do not forget to return to (x).
Exam Tip
\(y^2-10y+9=0\) से (y=1,9), इसलिए \(x^2=1,9\) और \(x=\pm1,\pm3\) हैं। परीक्षा में वापस (x) के मान निकालना न भूलें।
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