Question

aici:semnul inmultirii-*;semnul impartirii-/
Efectuati:
a)$\sqrt{56}$*$\sqrt{14}$
b)$\sqrt{143}/( -\sqrt{13} )$
c)$\sqrt{15}( \sqrt{33} - \sqrt{10} )$

Answer 1

√56×√14=√784=28
√143 /-√13=-√143/13=-√11
√15 (√33-√10)=√495-√150=3√165-5√6