The H.C.F. of (x2 - 4), (x2 - 5x - 6) and (x2 + x - 6) is - 

The H.C.F. of (x² - 4), (x² - 5x - 6) and (x² + x - 6) is - 
1). 1
2). (x - 2)
3). (x + 2)
4). (x² + x - 6)

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