Question

Упростить выражение:
1/3√18+2√2

2)2√20-2√45+1/4√16

Answer 1

1) =1/3*$sqrt{9*2}$+2$sqrt{2}$=1/3*3$sqrt{2}$+2$sqrt{2}$=$sqrt{2}$+2$sqrt{2}$=3$sqrt{2}$

2)=2*$sqrt{5*4}$-2$sqrt{5*9}$+1/4*4=2*2*$sqrt{5}$ - 2*3$sqrt{5}$+1=4$sqrt{5}$ -6$sqrt{5}$ +1=1-2$sqrt{5}$