Jenny is eight years older then twice her cousin sues age. The sum of their ages is less then 32. What is the greatest age that
1 answer:
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Taking the square root of both sides gives two possible cases,
or
Recall that
If and
, we have
so in the equations above, we can write
Then in the first case,
(where is any integer)
and in the second,
Then the solutions that fall in the interval are
B is the answer
i simplified the theorem, but i hope this makes sense!
