Answers

2015-12-26T18:06:41+05:30
PUT X = 1 IN EQUATION , IF IT GIVES ZERO THEN ITS A ROOT .

1 - 1 + 2 is not equal to 0 . So its not a root .
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2015-12-26T18:08:17+05:30
Substituiting x=1 in the eqn,
(1)^2-1+2=32
1-1+2=32
2=32
which is incorrect; so x=1 is not the root.
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