$$^{If\ m>n>0,\ x=m^2+n^2\ m,\ and\ y=2mn}$$ $$what\ is\ the\ value\ of\ \sqrt{x^2-y^2}in\ terms\ of\ mm\ and\ nn?$$
$$A. m^2+n^2$$
$$B. 2m^2+n^2$$
$$C. m^2+2n^2$$
$$D. n^2−m^2$$
$$E. m^2−n^2$$
OA is E
Which fast approach can i use to get here? can any expert help me out? Thanks so much
$$A. m^2+n^2$$
$$B. 2m^2+n^2$$
$$C. m^2+2n^2$$
$$D. n^2−m^2$$
$$E. m^2−n^2$$
OA is E
Which fast approach can i use to get here? can any expert help me out? Thanks so much
