zad. 2
a) (√7)^2 - (√3)^2 = 7 - 3 = 4
b) 4 * (√5)^2 - 5√2^2 = 4 * 5 - 5 * 2 = 20 - 10 = 10
zad. 3
a) √64 + √144 + √196 = 8 + 12 + 14 = 34
b) √625 - √225 - √400 = 25 - 15 - 20 = -10
zad. 4
pole prostokąta: 9 * 36 = 324cm^2
pole kwadratu: 324
√324 =18 cm - tyle ma bok kwadratu
obwód kwadratu: 4 * 18 = 72 cm
zad. 5
Odp: D
zad. 6
4 i 5
zad. 7
0,5 < √3 1/2 < √6 < 3 < √81/4
zad. 8
a) √81*100*25 = 9 * 10 * 5 = 450
b) √36*16/49*25 = 6*4/7*5 = 24/35
zad. 9
a) 7√10 = √(49*10) = √490
b) 8√3/4 = 8√0,75 = √64*0,75 = √48
c) 2/3√90 = √(2/3)^2*90 = √4*10 = √40
zad. 10
3√1+√49 = 3√1+7 = 3√8 = 2
zad. 11
a) 3√64 = -4, bo
(-4) * (-4) * (-4) = 16 * (-4) = -64
b) 3√0,001 = 0,1, bo
0,1 * 0,1 * 0,1 = 0,001
c) 3√(-3 3/8) = 3√(-27/8 )= -3/2 =-1,5
d) 3√125 = 5
