Question

√5•(-√5)•(-2)
Calculați vă rog

Answer 1

= -√25 × (-2) = + 5 × 2 = + 10

Answer 2

$+\sqrt5\cdot(-\sqrt5)\cdot(-2)= [(+)\cdot(-)\cdot(-)][\cdot(\sqrt5\cdot\sqrt5\cdot2)]\;=\;+\;5\cdot2\,=\,+10$