Question

ПАМАГИТЕ СТАВЛЮ 5 БАЛЛОВ!!!!!!!!!!!!!!!!!!!!!!

Answer 1

$displaystyle tt bigg(8frac{5}{12}bigg)^2-bigg(6frac{7}{12}bigg)^2=bigg(8frac{5}{12}-6frac{7}{12}bigg)bigg(8frac{5}{12}+6frac{7}{12}bigg)=\\\ displaystyle tt =bigg(frac{101}{12}-frac{79}{12}bigg)bigg(frac{101}{12}+frac{79}{12}bigg)=frac{22}{12}cdotfrac{180}{12}=frac{11}{1}cdotfrac{15}{6}=\\\ displaystyle tt =frac{11}{1}cdotfrac{5}{2}=frac{55}{2}=bold{27,5}$

Ответ: $displaystyle tt 27,5$