Question

rezolvati in R ecuatia de gradul II,forma incompleta.
d)10x²=0
i)2/3x²-1/3=0
Ajutatima va rog frumos....

Answer 1

1) 10x²=0
x²=0:10
x²=0
√x²=√0
x=0
S={0}

2) ⅔x²-⅓=0
⅓(2x²-1)=0
2x²-1=0:⅓
2x²-1=0
2x²=1
x²=½
√x²=√½
|x|=1/√2
x= √2/2 sau x=-√2/2 (s-a rationalizat)

S={±√2/2}