defence exam SSB Head Constable (Communication) 2023 Mock Test Mathematics Determinants

यदि रेखाएँ ax + by + c = 0, bx + cy + a = 0 और cx + ay + b = 0 संगामी हैं, तो- 

1
a3 + b3 + c3 + 3abc - 0
2
a3 + b3 + c3 = 3abc
3
a3 + b3 + c3 = abc
4
इनमें से कोई नहीं।
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