# how do I solve this?Watch

#1
I already got the answer, but it involved some guessing, what would be the best way to solve this
0
4 years ago
#2
(Original post by SidTheSloth1)
I already got the answer, but it involved some guessing, what would be the best way to solve this
Can you post your working? You say it involved some guessing so it would be useful if you show where you got up to before you used guessing.

If you haven't made any progress, your first step could be to write the right-hand-side as a fraction and then move the 4 to the other side.
0
4 years ago
#3
it was difficult to read the question as it was sideways... but you should think about expressing both sides as powers of 2.
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4 years ago
#4
(Original post by SidTheSloth1)
I already got the answer, but it involved some guessing, what would be the best way to solve this
You've posted this question twice now!

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#5
(Original post by davros)
You've posted this question twice now!

haha sorry, posted the wrong picture
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4 years ago
#6
(Original post by SidTheSloth1)
haha sorry, posted the wrong picture
I am wondering what guessing was involved as I assume that you know
• The cube root of 8
• What a negative index means
• How to divide by 4
• What the inverse of square root and cube are
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#7
Found what 8 to its power, which is 0.5, then found for to that power which is 8, thar means n is 1/4
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