Răspunsuri

2014-05-26T21:51:27+03:00
1)√18:√2-(-5)=√9+5=3+5=8
2)- \frac{1}{4.5}
3)-2,-1,0,1,2,3
4) \frac{x^{3}-x^{2} }{ x^{2}-1 } = \frac{ x^{2} (x-1)}{(x-1)(x+1)} = \frac{ x^{2} }{x+1}
5)d=l√3⇒l√3=3√6⇒l= \frac{3 \sqrt{6} }{ \sqrt{3} }= \frac{3 \sqrt{18} }{3}=3 \sqrt{2}
S=12*3√2=36√2
6)5 fete