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the value of ^(−7)^

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the value of ^(−7)^

by sanju09 » Wed Feb 29, 2012 12:17 am
What is the value of ^(−7)^, given that ^m^ = m^3 − m^2 − m?
A. −399
B. −385
C. −301
D. −287
E. 301
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by Anurag@Gurome » Wed Feb 29, 2012 12:28 am
sanju09 wrote:What is the value of ^(−7)^, given that ^m^ = m^3 − m^2 − m?
A. −399
B. −385
C. −301
D. −287
E. 301
^m^ = m^3 − m^2 − m
^(−7)^ = (-7)^3 - (-7)² - (-7)
= -343 - 49 + 7
= -385

The correct answer is B.
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