Răspunsuri

2014-03-10T10:26:40+02:00


34+15(x+3)²=(-13)²

34+15(x²+6x=9)=169

34+15x²+90x+135=169

15x(x+6)=169-34-135

15x(x+6)=0

⇒x=0

34+15(x+3)²=(-13)²

34+15(x²+6x=9)=169

34+15x²+90x+135=169

15x(x+6)=169-34-135

15x(x+6)=0

⇒x=0 e la fel ca la Mariusdarius07 dar nu am copiat
am rezolvat amândoi prin aceeasi metoda...ce dragutz <3
daaa:))
2014-03-10T12:27:10+02:00
15(x+3)^2=135
(x+3)^2=9
|x+3|=3
x+3 apartine {3;-3}
x apartine { 0 ; -6}