A student found a strong correlation between the age of people who run marathons and their marathon time. Can the student say th
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or
We have
Since we cannot factor easily, we complete the square.
Adding 2 to both sides give,
Dividing through by 3 gives
Adding
to both sides gives
The expression on the Left Hand side is a perfect square.
Splitting the plus or minus sign gives
or
or
We have
Since we cannot factor easily, we complete the square.
Adding 2 to both sides give,
Dividing through by 3 gives
Adding
The expression on the Left Hand side is a perfect square.
Splitting the plus or minus sign gives
or