Question

[Lê Duy Tâm]

Tính nhanh

a)-25.(35+147)+35.(25+147)

b)125.9.(-4).(-8).25.7

c)-42.276+42.176

d)(-25).68+(-34).(-250)

Answer 1

[cún cưng]

a,-25.(35+147)+35.(25+147)

=-25.35+147+35.25+147

=(-25+25).35+147

=35+147

=182