## College Algebra (10th Edition)

$21\frac{1}{2}$
Substitute $-2$ to $x$ in the given expression to obtain: $3x^2-5x+\frac{1}{x} \\= 3(-2)^2 -5(-2) + \frac{1}{-2} \\=3(4) +10 - \frac{1}{2} \\=12+10-\frac{1}{2} \\=22-\frac{1}{2} \\=21\frac{1}{2}$