Răspunsuri

2014-01-12T16:05:31+02:00
3 la puterea 1-x²=1/27=> 3 la puterea 1-x²=1/3³=> 3 la puterea 1-x²=3 la puterea (-3)=>
1-x²=(-3)=> -x²+4=0

delta= 0-4·(-1)·4=16

x1=(0-4)/(-2)=2

x2=(0+4)/(-2)=-2