Respuesta :

caylus
Hello,

I shall not resoved an 2th degree for that:

10*11=110 (evident)

When 10 and 11 (or -10 and -11) are multiplied, they equal 110. 

You can find the answer by solving the following equation:
x(x+1)=110
x^2+x-110=0
(x-10)(x+11)=0

Therefore 10*11 and -10*-11 can be the possible answers to your question.