Question

67 в кубе + 52 в кубе : 119 -67×52

Answer 1

$\frac{67^3+52^3}{119} -67*52= \frac{(67+52)(67^2-67*52+52^2)}{119} -67*52= \\ \\ \\ 67^2-2*67*52+52^2=(67-52)^2=15^2=225$