a) Evaluate 2^1 x 1^23 x 9^0
the answer is 2.... why?
b) (1 2/7)^2
the answer is 1 ^ 32/49
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- Thread Starter
- 30-10-2016 20:31
- 30-10-2016 21:05
This would be much easier to understand if you used LaTeX to write your expressions.
a) You probably know that indices are always done before multiplication, so you must work out each power before multiplying anything.
as putting anything to the power of 1 does not change it at all.
, as this just means 23 times, which is obviously 1.
as anything to the power 0 is 1.
After that, you just have which is obviously 2.
b) I'm really not sure what you mean here, that would be .
- 30-10-2016 21:09
1 and 2/7 is the same as 9/7
9/7 squared is 81/49