2 x 2 x 2 = 8
E porque simplesmente não consegui fazer o texto
They don´t live in Brooklyn
There aren´t twelve months in a year
The plane didn´t arrive at ten o ´clock
It isn´t six o´clock now
He didn´t go to Chigago by plane
The two boys aren´t in ...
The book doesn´t cost five dollars
They don´t live in Mexico now
The didn´t live in France for ten years
He didn´t get up at...
They didn´t sit in the park...
She doesn´t speak Englsh very well
The class doesn´t begin at...
She doesn´t drink ten cups of...
They didn´t begin to work in June
He isn´t ten years old
They didn´t plan to finish the...
Columbus didn´t dicover America in 1492
The stores weren´t closed because..
There weren´t four students...
They don´t usualy travel by plane
They didn´t deliver the...
para resolver vc tem q igualar a zero e depois resolver
ai vc usa a formula: x=(-b + √b²-4.a.c) ÷2.a
ou seja x é igual a menos b mais ou menos raiz de b au quadrado menos quatro vezes a vezes c.
resolvendo por partes fica
x=(-1 + √961) ÷ 2
x=-1 + 31=