Yumiko solved |x|>5 by solving x>-5 and x<5. explain the error yumiko made
1 answer:
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Given the recursive formula, each terms is five time the previous one.
This means that:
is 5 times
, which means
- in turn,
, so we have
. This means that
- Finally,
So, substituting this back gives
In general, since you have , each time you compute a new term you multiply by a factor of 5, so if
, you have
The equivalent expression of is
The fraction is given as:
Take the LCM
Express as products
Evaluate the product
Hence, the equivalent expression of is
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