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ch4aika [34]
3 years ago
9

Need help with theses questions please

Mathematics
1 answer:
Olin [163]3 years ago
7 0
Hello:
3x²+5x+2=0
delta = (5)²-4(3)(2)=1
x =( -5 <span>±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)</span>
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