# Strange Math 2.2

I don't know why I even took this class. All the math is so complicated. We were learning order of operations and then I get this monstrosity. Can you help me do it?

$$(3+4)(2-3)=18-1$$
$$(2-7)^2+(1-5)=-44-33$$
$$(5-1)(9+8)=53+31$$
$$(6-2)^2-(10-13)= \ ?$$

$$22-11$$
complex (kind of a synonym for complicated) number arithmetics with $$i$$'s omitted (one can easily guess that since all the numbers come in pairs, joined with plus or minus signs)
$$(3+4i)(2-3i)=18-1i$$
$$(2-7i)^2+(1-5i)=-44-33i$$
$$(5-1i)(9+8i)=53+31i$$
$$(6-2i)^2-(10-13i)=22-11i$$