Question

Answer 1

b: \(B=3\sqrt{2}\left(4-\sqrt{2}\right)+3\left(1-2\sqrt{2}\right)\)^2

=12căn 2-3*căn 2*căn 2+3*(9-4căn 2)

=12căn 3-6+27-12căn 2

=27-6=21

d: \(D=\sqrt{147}+\sqrt{54}-4\sqrt{27}\)

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

\(=-5\sqrt{3}+3\sqrt{6}\)

f: \(F=3\cdot5\sqrt{2}-7\cdot2\sqrt{2}+12\cdot3\sqrt{2}\)

=15căn 2-14căn 2+36căn 2

=37căn 2