Question

EX 6, va rog, repede.

Answer 1

√3 (2+5-7-2)=-2√3
√7 (11+7-3+5)= 20√7
√5 (2-4+2+9-7)= 2√5
√5 (1-3+6+3+9)=16√5
√6 (2-5-3)+√3 (3+3-9)= -6√6 - 3√3
√13(-9+5-8+1)+7√11=-11√13+7√11
√2(3-4-6)-√3(2+3-5)= -7√2

Answer 2

a)2√3+5√3-(7√3+2√3)=-2√3
b)11√7+7√7-(3√7-5√7)=20√7
c)2√5-4√5+(2√5+9√5-7√5)=2√5
d)√5+(-3√5+6√5)-(-3√5-9√5)=15+12√5
e)2√6+3√3-(5√6-3√3)+(-3√6-9√3)=-6√6-3√3
f)(-9√13+5√13)-(8√13-√13)+7√11=-11√13+7√11
g)(3√2-2√3)+(-4√2-3√3)-(6√2-5√3)=-7√2