Question

Calculeaza:
a)2(3-radical5)-6(3radical5+1);
b)radical3(7-2radical3)+7(-radical3+1);
c)2radical2(3-radical8+5radical2)-4(4+radical 72);
d)(radical6+radical24)(-10)+2(-6-3radical150);
e)3(radical2+1)-radical2(3+radical2).

Answer 1

a) 6-2V5-18V5-6= -20V5

b) 7V3-2*3-7V3+7=  -6+7= 1

c) V8=2V2

V72=6V2

2V2(3-2V2+5V2)-4(4+6V2)= 2V2(3+3V2)-16-24V2= 6V2+6*2-16-24V2= -18V2+12-16= -18V2-4

d) V24=2V6

V150=5V6

(V6+2V6)(-10)+2(-6-3*5V6)= 3V6*(-10)+2(-6-15V6)= -30V6-12-30V6= -60V6-12

e) 3V2+3-3V2-2=1