Question

calculati (radical45-radical5)^2-(radical11-radical13)(radical13+radical11)

Answer 1

40 - (11 + 13) =  40 - 24 = 16

Answer 2

$( \sqrt{45}- \sqrt{5})^2-( \sqrt{11}- \sqrt{13})(\sqrt{11}+ \sqrt{13})= \sqrt{45}^2-2 \sqrt{45*5}+ \sqrt{5}^2$ -$( \sqrt{11}^2- \sqrt{13}^2)$= 45-2$\sqrt{9*5*5}$+5-(11-13)=50-2*3*5+2=
20+2=22