(2b) 2 −4a(−3c)<04b 2 +12ac<04b 2 <−12ac , b 2 <−3ac , −a>b 2 /(3c) , a<−b 2 /(3c)12ac<0 (4b 2
is a positive number)
either c<0 or a<0
given, 3c/4<(a+b)
3c/4<(−b
2
/3c+b) (putting maximum value of a)
above equation implies,
c<0
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(2b) 2 −4a(−3c)<04b 2 +12ac<04b 2 <−12ac , b 2 <−3ac , −a>b 2 /(3c) , a<−b 2 /(3c)12ac<0 (4b 2
is a positive number)
either c<0 or a<0
given, 3c/4<(a+b)
3c/4<(−b
2
/3c+b) (putting maximum value of a)
above equation implies,
c<0
(2b) 2 −4a(−3c)<04b 2 +12ac<04b 2 <−12ac , b 2 <−3ac , −a>b 2 /(3c) , a<−b 2 /(3c)12ac<0 (4b 2
is a positive number)
either c<0 or a<0
given, 3c/4<(a+b)
3c/4<(−b
2
/3c+b) (putting maximum value of a)
above equation implies,
c<0
(2b) 2 −4a(−3c)<04b 2 +12ac<04b 2 <−12ac , b 2 <−3ac , −a>b 2 /(3c) , a<−b 2 /(3c)12ac<0 (4b 2
is a positive number)
either c<0 or a<0
given, 3c/4<(a+b)
3c/4<(−b
2
/3c+b) (putting maximum value of a)
above equation implies,
c<0