## Intermediate Algebra for College Students (7th Edition)

$10$
Substitute $7$ for $x$ to obtain: $=7^2-6\cdot 7 +3$ Apply the exponent first to obtain: $=49-6\cdot 7+3$ Perform multiplication next: $=49-42 + 3$ Perform subtract first and then addition: $=7 + 3 \\=10$