Question

(2radical5x4radical5)/2?

Answer 1

( 2√5 × 4 √5 ) / 2 = ( 8 × 5 ) / 2 = 4 × 5 = 20

Answer 2

$\frac{2 \times 5 \times 1}{2} = 5 \times 4 = 20$
simplificat fracti cu 2