Odpowiedzi

2010-03-14T11:12:11+01:00
9x+6-(3x-4)(x+2)=36-3x²
9x+6-3x+4+x+2=36-3x²
7x+12=36-3x²
7x+3x²=36-12
10x2=24
x2=2,4


x2=x²
2010-03-14T11:16:48+01:00
9x+6-(3x-4)(x+2)=36-3x²
9x+6-3x²-6x-4x-8=36-3x²
9x+6-6x-4x-8=36 |-6,+8,
9x-6x-4x=36-6+8
3x-4x=38
-1x=38|:-1
x=-38