Question

$( \frac{4}{7}+5)( \frac{4}{7}-2) - ( \frac{4}{7}+5) ^{2}$ calcular esto porfa :v

Answer 1

$( \frac{4}{7}+5)( \frac{4}{7}-2) - ( \frac{4}{7}+5) ^{2}= \\ \\ ( \frac{4}{7}+ \frac{35}{7})( \frac{4}{7}- \frac{14}{7}) - ( \frac{4}{7}+ \frac{35}{7}) ^{2} = \\ \\ ( \frac{4+35}{7})( \frac{4-14}{7}) - ( \frac{4+35}{7}) ^{2} = \\ \\ ( \frac{39}{7})( \frac{-10}{7}) - ( \frac{39}{7}) ^{2} = \\ \\ ( \frac{39*(-10)}{7*7}) - ( \frac{39*39}{7*7}) = \\ \\ \frac{-390}{49}- \frac{1521}{49}= \frac{-390+1521}{49}= \boxed{ \frac{1131}{49}}$

Espero que te sirva, salu2!!!!