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

$(\sqrt{10}+\sqrt3)(\sqrt{10}-\sqrt3)$ Use the FOIL method to multiply the binomials. $(\sqrt{10}\times\sqrt{10})+(\sqrt{3}\times\sqrt{10})+(-\sqrt3\times\sqrt{10})+(\sqrt3\times\sqrt3)$ Use the product rule for square roots. $10+\sqrt{30}-\sqrt{30}+3$ Combine like terms. $13$