Al factorizar la expresion algebraica (1Punto)
a3-3a2b+3ab2-b3 , rresulta
(a+b) (a-b)
(a+b)2
(a+b)3
(a-b)3

In the diagram, a building cast a 35-ft shadow and a flagpole casts an 8-ft shadow. if the the flagpole is 18 ft tall, how tall is the building? round the the nearest tenth.