Question

Show that
$4 \sqrt{12 } - \sqrt{50} - 7 \sqrt{48} + 20 \sqrt{3} + 5 \sqrt{2}$
is equal to 0.

Please give step-by-step explanation.​

Answer 1

−320+45

=3×3×5−32×2×5+45

=35−−65+45

=75−65

=5