Answer:
1. -2x²+3x-7=0
a= -2 b=3 c= -7
2.−2x²-6x+5=0
a= -2 b=-6 c= 5
3.x²+7x+12=0
a=1 b=7 c=12
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Answer:
1. -2x²+3x-7=0
a= -2 b=3 c= -7
2.−2x²-6x+5=0
a= -2 b=-6 c= 5
3.x²+7x+12=0
a=1 b=7 c=12