Răspunsuri

2014-06-08T21:38:06+03:00
X²+5x+6
x²+2x-15
x-2x²+7-14x=-2x²-13x+7
12x²-20xy+6xy-10y²=12x²-14xy-10y²
stai ca nu mai inteleg ,pt cine am rezolvat?
pt alinb, cel care a pus intrebarea si cine ti-a si multumit:))
mie mi-a multumit Mariusdarius07
2014-06-08T21:39:29+03:00
(x+2)(x+3)= x²+5x+6
(x-3)(x+5)=x²+2x-15
(1-2x)(x+7)=-2x²-13x+7
(3x-5y)(4x+2y)=12x²-14xy-10y²