Question

1. Eliminar signos de agrupación y simplifica resultados:
{2[(-(7+3-5)) + 25+ 2^2] - [(5)(8) +2] +3[2+7]} - (5 (^2} +1) =

Answer 1

{2[(-(7+3-5)) + 25+ 2^2] - [(5)(8) +2] +3[2+7]} - (5 (^2} +1) =

=2(−(10−5)+25+22)−((5)(8)+2)+3(2+7)−5²+1

=2(−5+25+22)−((5)(8)+2)+3(2+7)−5²+1

=2(20+22)−((5)(8)+2)+3(2+7)−5²+1

=2(20+4)−((5)(8)+2)+3(2+7)−5²+1

=(2)(24)−((5)(8)+2)+3(2+7)−5²+1

=48−((5)(8)+2)+3(2+7)−5²+1

=48−(40+2)+3(2+7)−5²+1

=48−42+3(2+7)−5²+1

=6+3(2+7)−5²+1

=6+(3)(9)−5²+1

=6+27−5²+1

=33−5²+1

=33−25+1

=8+1

=9

R// 9

Saludos!xd