Question

calculati 5√81-√61 x √196+2√100

Answer 1

$5 \sqrt{81} - \sqrt{61} \times \sqrt{196} + 2 \sqrt{100} = \\ \\ 5 \times 9 - \sqrt{61} \times 14 + 2 \times 10 = \\ \\ 45 - 14 \sqrt{61} + 20 = \\ \\ 65 - 14 \sqrt{61}$