defence exam CISF Head Constable Ministerial (HCM) & ASI Steno Mock Test Series Quantitative Aptitude Algebra Identities
What is \(\frac{x^4}{(x^2 - y^2) (x^2 - z^2) }+ \frac{y^4}{(y^2 - x^2) (y^2 - z^2)} + \frac{z^4}{(z^2 - x^2)(z^2 - y^2)}\) equal to ?
1
-1
2
0
3
1
4
x2 + y2 + z2