Question

Answer 1

b: \(=12\sqrt{2}-6+3\left(9-4\sqrt{2}\right)\)

=12căn 2-6+27-12căn 2=21

c: =6căn 3+10căn 3-12căn 3

=4căn 3

d: \(=7\sqrt{3}+3\sqrt{6}-12\sqrt{3}=-5\sqrt{3}+3\sqrt{6}\)

g: \(=8\sqrt{5}-14\sqrt{5}+12\sqrt{5}=6\sqrt{5}\)

h: =2căn 7-12căn 3+28căn 3

=18căn 3