Odpowiedzi

2010-03-05T22:53:48+01:00
A √7/7
b2√2/2=√2
c 5√3/3
d 10√5/10=√5
e 3√5/25
2010-03-05T22:53:51+01:00
A) 1/√7 = 1 * √7 / √7 *√7 = √7/7
b) 2/√2 = 2 * √2 / √2 * √2 = 2√2/2
c) 5/ √3 = 5 * √3 / √3 * √3 = 5√3 / 3
d) 10/ 2√5 = 10 / √20 = 10 * √20 / √20 * √20 = 10√20/20
e) 3/5√5 = 3 / √125 = 3* √125 / √125 * √125 = 3√125 / 125
2010-03-05T22:55:29+01:00
A)(1/√7)x(√7/√7)=√7/7
b)(2/√2)x(√2/√2)=2√2/2=√2
c)(5/√3)x(√3/√3)=5√3/3
d)10/2√5=(5/√5)x(√5/√5)=5√5/5=√5
e)(3/5√5)x(√5/√5)=3√5/25