Question

Rezolvati ce e incercuit cu rosy.

Answer 1

Sper ca te-am ajutat.

Answer 2

7. (√12+1)²=(2√3+1)²=12+4√3+1=13+4√3
(√3+√2)²=3+2√6+2=5+2√3
(√8-3)²=(2√2-3)²=8-12√2+9=17-12√2
(√10-√6)²=10-2√70+7=17+2√70
(√13-√5)(√13+√5)=13-5=8
(5-√6)(5+√6)=26-6=19

8. (√3-1)²+√12=3-2√3+1+2√3=4

(√5-√3)²+2√5•√27=5-2√15+3+2√5•3√3=
=5-2√15+3+6√15=8+4√15

2(√7+1)²-2(√7-2)²=2(7+2√7+1)-2(7+4√7+4)=
=2(8+2√7)-2(11+2√7)=16+4√7-22-8√7=-6-4√7

Punctul d) este la fel ca cel anterior.

9. (2+√5)²4+4√5+5=9+4√5

(√5+√6)²=5+2√30+6=11+2√30

(√6-√2)²=6-2√12+2=6-4√3+2=8-4√3

si asa este si la celelalte.