Question

Calculati:
a)2√3 * 4√6 =
b)3√2 : √2 =
c) (5√6) * (2√15) : (15√5) =
d) 2√2 * √5 - 3√5 * √2 + 4√5 * 3√2 - 5√5 * 4 √2 =
e)8√2 + 4(√5 - 2√2 ) - 3√5 =

Answer 1

a)  $...=8 \sqrt{18} =24 \sqrt{2}$
b) 3.
c) $...=10 \sqrt{90} :(15 \sqrt{5} )=30 \sqrt{10} :(15 \sqrt{5} )=2 \sqrt{2}$
d)$...=2 \sqrt{10} -3\sqrt{10} +12\sqrt{10} -20\sqrt{10} =-9\sqrt{10}$
e)$...=8 \sqrt{2} +4 \sqrt{5}-8 \sqrt{2}-3 \sqrt{5} = \sqrt{5}$