What is the greatest integer n such that n2−11n+24≤17n−8?
Combining like terms: n2−28n+32≤0
Using quadratic formula n = 28±4√412=14±2√41. Since our quadratic must be nonnegative, when factored (x - r)(x - s) where r and s are our roots, they must both be positive or both negative, so we take the extreme intervals: (−inf,14−2√41] U [14+2√41,inf)