Question

√121-√144+√64-√1000=

Answer 1

11-12+8-10√10=7+10√10

Answer 2

$\rm \sqrt{121}-\sqrt{144}+\sqrt{64}-\sqrt{1000} = \\ \\ \sqrt{1000}=\sqrt{100\cdot10}=10\sqrt{10} \\ \\ 11-12+8-10\sqrt{10} = \\ \\ \bold{R\v aspuns:7-10\sqrt{10}}$