👤

Efectuati: a) (√3-1)²+√12=
b) (√5-√3)²+2√5•√27=
c) 2(√7+1)²-2(√7-1)²=
d) (√8-√3)²+(√6-1)(√6+1)=
Rezolvare completa. Va mutumesc!


Răspuns :

a)(√3-1)²+√12=3-2√3+1+2√3=4
b)(√5-√3)²+2√5*√27=5-2√15+3+2√5*3√3=7-2√15+6√15=7+4√15
c)2(√7+1)²-2(√7-1)²=2(7+2√7+1)-2(7-2√7+1)=16+4√7-16+4√7=8√7
d)(√8-√3)²+(√6-1)(√6+1)=
8-2√24+3+6-1=16-4√6