Odpowiedź:
Szczegółowe wyjaśnienie:
5-√7)(5+√7)=25-7=18
(√5+1)(1-√5)=(1+√5)(1-√5)=1-5=-4
(1/3+ √6/2)(1/3-√6/2)=1/9- 6/4=1/9-3/2=2/18-27/18= -25/18
(2√2-3)(2√2+3)=8-9=-1
(√2-√3)(√2+√3)=2-3=-1
(√5+√2/2)(√5-√2/2)=5-2/4=5-1/2=4,5
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Odpowiedź:
Szczegółowe wyjaśnienie:
5-√7)(5+√7)=25-7=18
(√5+1)(1-√5)=(1+√5)(1-√5)=1-5=-4
(1/3+ √6/2)(1/3-√6/2)=1/9- 6/4=1/9-3/2=2/18-27/18= -25/18
(2√2-3)(2√2+3)=8-9=-1
(√2-√3)(√2+√3)=2-3=-1
(√5+√2/2)(√5-√2/2)=5-2/4=5-1/2=4,5