Why cannot we use division? Why should we subtract?
A. (1) (x^2+1)x > (x^2+1) divide by (x^2+1) on both sides
(x2+1)x > (x2+1)
_______ _______
(x2 + 1) (X2+1)
X > 1 Sufficient
(2) x2>x if x2 is 4
4 / 2 > 1 so 2 > 1
or 4 /-2 < 1 so -2 < 1 Insufficient
So the answer is {A}
Can this be a solution
A. (1) (x^2+1)x > (x^2+1) divide by (x^2+1) on both sides
(x2+1)x > (x2+1)
_______ _______
(x2 + 1) (X2+1)
X > 1 Sufficient
(2) x2>x if x2 is 4
4 / 2 > 1 so 2 > 1
or 4 /-2 < 1 so -2 < 1 Insufficient
So the answer is {A}
Can this be a solution
