Question

27^2-(0,27)^2/27,27 Нужно подробное решение

Answer 1

$frac{27^{2} - 0,27^{2}}{27,27} =frac{27^{2}- 27^{2}*0,01^{2}}{27*1,01} = frac{27^{2}(1-0,01^{2})}{27*1,01} \ = frac{27(1-0,01)(1+0,01)}{1,01} = 27(1-0,01)=27-0,27=26,73$