Question

35x + ty - 35y - tx даю 10 баллов

Answer 1

$\displaystyle\bf\\35x+ty-35y-tx=\Big(35x-35y\Big)+\Big(ty-tx\Big)=\\\\=35\cdot\Big(x-y\Big)+t\cdot \Big(y-x\Big)=35\cdot\Big(x-y\Big)-t\cdot \Big(x-y\Big)=\\\\=\Big(x-y\Big)\cdot \Big(35-t\Big)$