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What is the value of x^5? (1) x^2= 426 (2) x^9< 23

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What is the value of x^5? (1) x^2= 426 (2) x^9< 23 [#permalink] New post 11 Sep 2004, 10:00
What is the value of x^5?
(1) x^2= 426
(2) x^9< 23
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 [#permalink] New post 11 Sep 2004, 10:13
C it is although I did not bother calculate this. The values I got were approximations.
1) -21<x<-20 or 20<x<21
2) x<2
We know from both combined that x must be some negative real number b/w -21 and -20
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 [#permalink] New post 11 Sep 2004, 11:59
Yes C
1. We know x= +-20.63 so insufficient.
2. X<2. So Insufficient

Combining we know X = -20.63 and hence can find X^5.
  [#permalink] 11 Sep 2004, 11:59
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What is the value of x^5? (1) x^2= 426 (2) x^9< 23

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