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Ecuatii de gradul 2 forma incompleta 
a)3x²-12=0
b)2x²-5x=0
c)5x²+8=0
d)10x²=0
e)x²-0,99=1,01


Răspuns :

a) x=2 x=-2
b)x=0 sau x=5/2
c)x=-2[tex] \sqrt{2 } [/tex]/5
d)x=0
e)x=[tex] \sqrt{2} [/tex] sau [tex]- \sqrt{2} [/tex]