Question

3...a)3√8-2√27-√32+5√2 =?
b)3√20+3√18-2√45-2√50=?
c) 4√32-5√27+2√12-5√8=?
d) 2√20-3√12-5√45+√27 =?

Ajutor !!!

Answer 1

a)6√2 - 6√3 -4√2+5√2= 6(√2-√3)+√2=7√2-6√3
b) 16√2-15√3+4√3-10√2=6√2-11√3c)
4√5-6√3-15√5+3√3=-11√5-3√3

Answer 2

a)3√8-2√27-√32+5√2 =
=6√2-6√3-4√2+5√2 =
=7√2-6√3

b)3√20+3√18-2√45-2√50=
=6√5+9√2-6√5-10√2=
=-√2

 c) 4√32-5√27+2√12-5√8=
=16√2-15√3+4√3-10√2=
=6√2-11√3

d) 2√20-3√12-5√45+√27 =
= 4√5-6√3-15√5+3√3 =
= -3√3-11√5