Răspunsuri

2014-04-27T18:58:55+03:00


x²-9=0

x²=9

x=√9=3

x+3=0

x=-3

x-5=0

x=5

2014-04-27T19:01:05+03:00
---> |(x-3)(x+3)| +|(x+3)(x-5)=0
----> |x+3|(|x-3|+(x-5|)
---->|x+3|=10---?x=-3
----->|x-3| + |x-5|=0 si de aici e o ecuatie.