Discussion
If x = 4, then 
*This question is included in Nova Press: Set N - Exponents & Roots, question #7
| (A) | –14 |
| (B) | ... |
| (C) | ... |
| (D) | ... |
| (E) | ... |
| (F) | ... |
The solution is
Posted: 03/20/2012 22:44
The answer to this should be 18, correct? If you raise a negative number to an even power it should always be positive. Plus 2 would equal 18.
Posted: 03/21/2012 00:13
Justin, sorry to disappoint. The order of operations is exponent first, then negation. Remember PEMDAS (parentheses, exponent, multiplication, division, addition, subtraction)? Negation is basically multiplying by -1. This is a trick question. So you would raise 2 to the power first, then negating, i.e., multiplying by -1.
Posted: 03/21/2012 08:44
Ahhhh ok, that was tricky!
Posted: 02/26/2014 18:17
The answer was wrong, if answer is -14, you need(-2),not 2
Posted: 02/28/2014 10:45
Michael, the answer is not wrong. Please look up the discussion thread for explanation.