Odpowiedzi

2010-03-11T19:11:59+01:00
9x+7y-36x²-45xy-5+7+4x²-4x+3x=
=8x+7y-32x²-45xy-5+7
2010-03-11T19:17:22+01:00
9x+7y-36xdo kwadratu-45xy-5+7+4x do kwadratu-4x+3x=8x+7y-32x do kwadratu-45xy+2
2010-03-11T19:34:12+01:00
9x+7y-9x[4x+5y]-5+7+[x-2]2x+3x=9x+7y-36x²-45xy-5+7+2x²-4x+3x=
8x+7-34x²-45xy+2


²