Question

Найдите число, 140% которого равны...

Answer 1

$7 sqrt{( sqrt{7})^2 - 2 * sqrt{7} * sqrt{2} +( sqrt{2})^2 } + frac{35( sqrt{7}+ sqrt{2}) }{( sqrt{7})^2-( sqrt{2})^2 } =\=7 sqrt{( sqrt{7}- sqrt{2})^2 } +7( sqrt{7} + sqrt{2} )=\ =7 sqrt{7} -7 sqrt{2} +7 sqrt{7} +7 sqrt{2} =14 sqrt{7}$

140% - 14√7
100% - x

x = 1400√7/140 = 10√7

Ответ: 10√7