Odpowiedzi

2010-01-19T20:32:23+01:00
( x2+2x+1 )+ ( x2 - 4 ) = 2x2 + 2x -3

x2 - 4x2 + 4x2 - ( x2 - x + 1/4 )= x - 1/4
2010-01-19T20:46:15+01:00
A) ( x2+2x+1 )+ ( x2 - 4 ) = 2x2 + 2x -3

b) x2 - 4x2 + 4x2 - ( x2 - x + 1/4 ) = x - 1/4