Question

25 Calculaţi:
a 4-√15 +1-51+√15-3;
c |√11 – √12|+|3– √11|-|√12–3|;
b
·|-2⁄3 |+|3–√6|+|4–√6|;
d√5-√2 +16-√5 + √2-1.

Answer 1

a) $\sqrt{15\\}$ se reduce , =4+1-51-3=-49

b) Ι$\sqrt{11} -2\sqrt{3}$Ι+$\sqrt{11} -3-$Ι$2\sqrt{3} -3$Ι=$2\sqrt{3} -\sqrt{11} +\sqrt{11} -3-(2\sqrt{3} )$

=$2\sqrt{3} -3-2\sqrt{3} +3$=-3+3=0

c) =$\frac{2}{3} +3-\sqrt{6} +4-\sqrt{6} =\\\frac{2}{3}+7-2\sqrt{6} =\\\frac{23}{3}-2\sqrt{6}$

d)$\sqrt{5} \\\sqrt{2}$ se reduc , =16-1=15