state gov Allahabad High Court Group C Mock Test Series 2024 Quantitative Aptitude Algebra Identities
If ab + bc + ca = 0, then the value of \(\frac{{\left( {{b^2} - ca} \right)\left( {{c^2} - ab} \right) + \left( {{a^2} - bc} \right)\left( {{c^2} - ab} \right) + \left( {{a^2} - bc} \right)\left( {{b^2} - ca} \right)}}{{\left( {{a^2} - bc} \right)\left( {{b^2} - ca} \right)\left( {{c^2} - ab\;} \right)}}\) is
1
-1
2
0
3
1
4
2