Question

Упростите выражений(абвг)

Answer 1

$sqrt{pi^2-8pi+16} = sqrt{(pi-4)^2} =|pi-4|=4-pi \ sqrt{(2- sqrt{5})^2 } + sqrt{(3- sqrt{5})^2 } = \ =|2- sqrt{5}|+|3- sqrt{5}|= sqrt{5}-2+3- sqrt{5}=1$

$sqrt{4pi^2-28pi+49} = sqrt{(2pi-7)^2} =|2pi-7|=7-2pi \ sqrt{(2.7- sqrt{7})^2 } + sqrt{(2.6- sqrt{7})^2 } = \ =|2.7- sqrt{7}|+|2.6- sqrt{7}|=2.7- sqrt{7}+ sqrt{7}-2.6=0.1$