Brianna’s mother is paying for a 30$meal. She has a coupon for the meal. what does brianna’s mother pay for the meal
2 answers:
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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