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lozanna [386]
3 years ago
5

Plss help me I need help

Mathematics
2 answers:
GalinKa [24]3 years ago
4 0
We are going to calculate D=b²-4ac , if it less than 0 , the equation will not have real solutions
1. D=4²+4*2*12  positive 2 real solutions

2. 2x²-x-12=0
D=1²+4*1*12   positive 2 real solutions

3. 2x²+4x+12=0
D=16-4*2*12=16-96=-80 no real solutions ,     correct answer C

4. D=16-4*2*0=16 two real solutions
Paul [167]3 years ago
3 0
I think that the answer is c
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Answer:

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liq [111]
1)
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