Question

Efectuati calculele:
a.2√3+(7√3-5√3)-√108
b.3√5+2(8√5-6√3)-√80
c.2(3√5-4√5)-(11√5-7√5)
d.3(5√2-6√2)-(13√2-8√2)
e.3(√12-√3)+2(8√3-6√3)-4√3
f.5(√18-√2)-4(3√8-5√2)+6√2
Va rog ajutati-ma dar si daca vreti puteti sa imi explicati cum ati facut!!!

Answer 1

a.2√3+(7√3-5√3)-√108=
=2√3+7√3-5√3-6√3=
=9√3-11√3=
=-2√3

b.3√5+2(8√5-6√3)-√80=
=3√5+16√5-12√3-4√5=
=19√5-12√3-4√5=
=15√5-12√3

c.2(3√5-4√5)-(11√5-7√5)=
=6√5-8√5-11√5+7√5=
=12√5-19√5=
=-7√5

d.3(5√2-6√2)-(13√2-8√2)=
=15√2-18√2-13√2+8√2=
=23√2-31√2=
=-8√2

e.3(√12-√3)+2(8√3-6√3)-4√3=
=3√12-3√3+16√3-12√3-4√3=
=6√3+13√3-16√3=
=3√3

f.5(√18-√2)-4(3√8-5√2)+6√2=
=5√18-5√2-12√8+20√2+6√2=
=15√2-5√2-24√2+20√2+6√2=
=41√2-29√2=
=12√2