Discussion

Column Ax < 0Column B
x2 - x50
(A)Column A is larger
(B)...
(C)...
(D)...
(E)...
(F)...
*This question is included in Nova Math - Problem Set B: Substitution 2, question #3

The solution is

Posted: 11/27/2015 01:03
If x =-1, the x^2-x^5 is not 2 but 0. -1^2 is 1.
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Admin
Posted: 11/27/2015 01:21
Hi John,

If x = −1, then x^2 − x^5 = (-1)^2 - (-1)^5 = 1 - (-1) = 1 + 1 = 2.

Nova Press
Posted: 11/27/2015 03:34
Reply: Thanks, I get it now. My mistake.
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