यदि समीकरण (1 + t2)x2 + 2tcx + (c2 − a2) = 0 के मूल बराबर हैं, तो निम्नलिखित में से कौन सा सत्य है ? 

1
t= c2(1 + a2
2
a2 = c2 (1 + t2
3
t2 = a2(1 + c2
4
c2 = a2 (1 + t2

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