subiectul I
1.√18 -7=3√2 -7
2.7 numere
3.5√2
4.3√2
5.a)2√3
b) 45
subiectul II
6.
[tex] \frac{ \sqrt{2}-1 }{( \sqrt{2} -1)( \sqrt{2}+1) } + \frac{ \sqrt{3} -\sqrt{2} }{( \sqrt{3}+ \sqrt{2})( \sqrt{3} - \sqrt{2} ) } + \frac{ \sqrt{3} - \sqrt{4} }{( \sqrt{3}- \sqrt{4})( \sqrt{3}+ \sqrt{4)} } [/tex]
√2-1+√3-√2+√4-√3=-1+2 =1
7.9
c) 45 de grade
10.
a)=VC=10
b)BM=MC=6 cm
triunghiulVMB dreptunghic
VM²=VB²-BM²
VM²=10²-6²
VM²=100-36
VM²=64
VM=8cm
