Question

determine whether x=1 is the root of the equation X2-x+2=32 or not ?

Answer 1

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 .

Answer 2

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.