यदि (x + 2), (ax2 + bx + c) और (bx2 + ax +c) का उभयनिष्ठ गुणनखंड है, तो निम्न में से कौन सही है?

1
a = c; a + b + c =0
2
a = b; a + b + c =0
3
a = b = c
4
b = c; a + b + c = 0

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