Question

Aduceti la forma cea mai simpla expresia -10√125+2√108+7√192-3√245 PLEASE DAU COROANA LA PRIMUL RASPUNS CORECT

Answer 1

$-10 \sqrt{125} +2 \sqrt{108} +7 \sqrt{192} -3 \sqrt{245} = \\ =-10 \cdot 5 \sqrt{5} +2 \cdot 6 \sqrt{3} +7 \cdot 8 \sqrt{3} -3 \cdot 7 \sqrt{5} = \\ =-50 \sqrt{5} +12 \sqrt{3} +56 \sqrt{3} -21 \sqrt{5} = \\ =-71 \sqrt{5} +68 \sqrt{3}$