0 votes 0 votes For what value of $k,$ expression $x^{4} – 2x^{2} + k$ will be a perfect square ? $0$ $1$ $-1$ Cannot be determined. Quantitative Aptitude nielit2022feb-scientistc + – Lakshman Bhaiya asked Jul 21, 2022 edited Aug 5, 2022 by Lakshman Bhaiya Lakshman Bhaiya 13.7k points 220 views answer comment Share See all 0 reply Please log in or register to add a comment.