1.usuń niewymierność z mianownika.
a)
5-2√5
3√5
b)
3 √2-4 1/2
2√7-4
5-2√5 /3√5 *√5/√5=5√5-10/15=
=5(√5-2)/15=(√5-2)/3
3√2-4 1/2 /2√7-4 *2√7+4/2√7+4=
=6√14+12√2-9√7-18 / 28-16=
=3(2√14+4√2-3√7-6)/12 =
=(2√14+4√2-3√7-6)/4
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a)
5-2√5 /3√5 *√5/√5=5√5-10/15=
=5(√5-2)/15=(√5-2)/3
b)
3√2-4 1/2 /2√7-4 *2√7+4/2√7+4=
=6√14+12√2-9√7-18 / 28-16=
=3(2√14+4√2-3√7-6)/12 =
=(2√14+4√2-3√7-6)/4