Find the positive solution for c: 8 2 + 15 2 = c 2
1 answer:
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With some extra effort, the radical can be removed from the denominator. That result is
The preferred form would be the one with the radical in the denominator, as it correctly shows the domain of the function to be x ≥ -7. The function actually is defined at x=74, which the "rationalized" form does not show.