Odpowiedź:
zad 1
√32 * √2 = √(32 * 2) = √64 = 8
√20 * √5 = √(20 * 5) = √100 = 10
√72 * √2 = √(72 *2) = √144 = 12
√20 * √180 = √(20 * 180) = √3600 = 60
√1200 : √3 = √(1200 : 3) = √400 = 20
√50 : √2 = √(50 : 2 ) = √25 = 5
√98/√2 = √(98/2) = √49 = 7
√75/√3 = √(75/3)= √25 = 5
zad 2
a) 3 = √9 , więc 3√6 = √9 * √6 = √(9 * 6) = √54
b) 2 = √4 , więc 2√5 = √4 * √5 = √(4 * 5) = √20
c) 5 = √25 , więc 5√2 = √25 * √2 = √(25 * 2) = √50
d) 2 = √4 , więc 2√2 = √4 * √2 = √(4 * 2) = √8
e) 3 = √9 , więc 3√2 = √9 * √2 = √(9 * 2) = √18
f) 7 = √49 , więc 7√3 = √49 * √3 = √(49 * 3) = √147
zad 3
√63 = √(9 * 7) = √9 * √7 = 3√7
√40 = √(4 * 10) = √4 * √10 = 2√10
√28 = √(4 * 7) = √4 * √7 = 2√7
√200 = √(100 * 2 )= √100 * √2 = 10√2
