ashontiera22
ashontiera22
23-03-2017
Mathematics
contestada
Need help with theses questions please
Respuesta :
ghanami
ghanami
23-03-2017
Hello:
3x²+5x+2=0
delta = (5)²-4(3)(2)=1
x =( -5
±1)/6
x= -2/3 or x=-1
t4-81=(t²)² -9² = (t²-9)(t²+9) =(t-3)(t+3)(t²+9)....(answer B)
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