Question

-10✓125+2✓108+7✓192-3✓245

Answer 1

-10✓125+2✓108+7✓192-3✓245=
=-10·5√5+2·2·3√3+7·2³√3-3·7√5=
=-50√5+12√3+56√3-21√5=
=68√3-71√5

Answer 2

$\sqrt{125 } = 5 \sqrt{5}$

$\sqrt{108} = 6 \sqrt{3}$

$\sqrt{192} = 8 \sqrt{3}$

$\sqrt{245} = 7 \sqrt{5}$

$- 50 \sqrt{5} +1 2 \sqrt{3} + 56 \sqrt{3} - 21 \sqrt{5}$

$- 71 \sqrt{5} + 68 \sqrt{3}$