SOLUTION: How would you evaluate this expression? 4 with an exponent of -2 minus 4 with an exponent of -1

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Question 111065: How would you evaluate this expression?
4 with an exponent of -2 minus 4 with an exponent of -1
Found 3 solutions by stanbon, checkley71, MathLover1:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
evaluate this expression?
4 with an exponent of -2 minus 4 with an exponent of -1
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4^(-2) - 4^(-1)
= 1/16 - 1/4
= 1/16 - 4/16
= -3/16
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cheers,
Stan H.

Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
4^-2-4^-1
1/4^2-1/4
1/16-1/4
(1-4)/16
-3/16 ANSWER.

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
4+%5E+-2+-++4+%5E+-1+
= 1%2F4%5E2 – 1%2F4%5E1
= 1%2F8 -1%2F4……….multiply 1%2F4 by 2 to get denominator 8
and it will be: 1%2F4+=+2%2F8
= 1%2F8–2%2F8
= -1%2F8+