nie musi byc mocno rozpisane,bede potrzebowac do sprawdzenia
usun niewymiernosc z ulamka:
a) _3_
2√3
b) _4√3_
√3+2
c) _2√5_
3√2-4
d) _4√2_
2√3+5
e) _12_
√5-√3
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a)
b)
c)
d)
e)
a)3/2√3 *√3/√3=3√3/6=√3/2
b)4√3/(√3+2) *(√3-2)/(√3-2) =(12-8√3)/-1=
=-4(-3+2√3)/-1=4(-3+2√3)
c)2√5/3√2-4 *(3√2+4)(3√2+4)=(6√10+8√5)/(18-16)=
=2(3√10+4√5)/2 =3√10+4√5
d)4√2/2√3+5 *(2√3-5)/(2√3-5)=(8√6-20√2)/(12-25)=
=4(2√6-5√2)/-13
e)12/√5-√3 * (√5+√3)/(√5+√3)=12(√5+√3)/2=
=6(√5+√3)