Question

-2x - 2 ( x + 1 ) ( x + 2 )

Answer 1

-2x-2(x+1)(x+2)
-2x-2(x^2+2x+x+2)
-2x-2x^2-4x-2x-4
-2x^2-4x-4/ inmultim prin -1 sa scapam de minus
2x^2+4x+4
Si avem o ecuatie de gradul doi
Si aflam delta si solutiile