## College Algebra (11th Edition)

$-3\sqrt{7}+2i$
Distribute signs to parentheses. $3\sqrt{7}-4\sqrt{7}+i-4i-2\sqrt{7}+5i$ Collect like terms, and add or subtract. $(3-4-2)\sqrt{7}+(1-4+5)i$ $-3\sqrt{7}+2i$