Simplify the expression 
as much as possible after substituting 
for x .
Definitions:
Body Mass Index (BMI)
A numerical value calculated from a person's weight and height, used to classify them as underweight, normal weight, overweight, or obese.
Confidence Interval
A range of values, derived from sample data, that is likely to contain the true value of an unknown population parameter.
Obese
A medical condition characterized by excessive body fat accumulation that presents a risk to health.
Confidence Interval
A range of values, derived from sample data, that is likely to contain the value of an unknown population parameter, expressed with a certain level of confidence.
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