Question

упростить))))пожалки))

Answer 1

$2 sqrt{2} + sqrt{50}- sqrt{98} =2 sqrt{2} +5 sqrt{2}-7 sqrt{2} =7 sqrt{2}-7 sqrt{2}=0$

$sqrt{50}= sqrt{2*25} }=5 sqrt{2}$

$sqrt{98} = sqrt{2*49} =7 sqrt{2}$