Question

The largest interval for which x¹² – x⁹ + x⁴ – x + 1 > 0 is:

• A. -4 < x < 0
• B. 0 < x < 1
• C. -100 < x < 100
• D.

Answer 1

The correct option is D

Use answer options to arrive at the answer at the earliest

Since the highest power of x is even (12) , it will always be greater than its negative counterpart (9), hence, irrespective of the value of x, the net value will be positive. Answer is option (d)