Question

Вычислить:
42^2-12^2 / 16^2+2*16*14+14^2

Answer 1

$frac{42^2-12^2}{16^2+2*15*14+14^2} = frac{(42-12)(42+12)}{256+448+196} = frac{30*54}{900} = frac{1620}{900} = frac{9}{5} =1 frac{4}{5} =1,8$