Question

DAU COROANA!!!!!AJUTORRR 1. Calculează: a) 5V3+7V3-2V3= b) V5+3V5-4V5= c) -V7-4V7+3V7= d) 3V2×5V3+V6= e) (6V12):(3V3)-5= f)3V2+7V6:V3= ​

Answer 1

Răspuns:

a) $5\sqrt{3} +7\sqrt{3}-2\sqrt{3} =(5+7-2)\sqrt{3}=10\sqrt{3}$

b)$\sqrt{5} +3\sqrt{5}-4\sqrt{5} =(1+3-4)\sqrt{5} =0$

c)-$\sqrt{7} -4\sqrt{7}+3\sqrt{7} =(-1-4+3)\sqrt{7}= -2\sqrt{7}$

d)$3\sqrt{2}*5\sqrt{3}*\sqrt{6}=(3*5*1) \sqrt{2*3*6} =15\sqrt{36}=15*6= 90$

e) $(6\sqrt{12} ):(3\sqrt{3} )-5=2\sqrt{4}-5=2*2-5=-1$

f)$3\sqrt{2}+7\sqrt{6}:\sqrt{3} =3\sqrt{2} +7\sqrt{2}=10\sqrt{2}$

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