1) 4√2+2√8=
2) 3√5 + 2√5 / 4√5 =
3) (4√2)² + 2√2 =
4) 3√12 : √3 =
5) √ 2 1/4 : √1 1/2 =
6) 3 √50 + 2 √32 =
7) √1 1/8 * √8
8) Usuń niewymierność:
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1) 4√2+2√8=4√2+2√4·√2=4√2 4√2=8√2
2) 3√5 + 2√5 / 4√5 =3√5+½
jezeli calosc jest nad kreska ulamkowa wtedy:
(3√5+2√5)/4√5=5√5/4√5 =5/4=1¼
3) (4√2)² + 2√2 = 32+2√2 =2(16+√2)
4) 3√12 : √3 = 3√4 =3·2=6
5) √ 2 1/4 : √1 1/2 =√9/4 : √(3/2) =3/2 · √2/√3 =(3√2·√3)/(2·3)=√6/6
6) 3 √50 + 2 √32 = 3√25·√2 +2√16·√2 =15√2+8√2=23√2
7) √1 1/8 * √8 =√(9/8) ·√8 =√72/√8=√9=3
zad2
3/(2√5)=(3√5)/(2·5)=(3√5)/10 =0,3√5
(3√2) /(2√7)= (3√2·√7)/(2·7) =(3√14)/14