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4x2-6*4x+9>2
4x2-24x+9>2
4x2-24x+7=0
a=4 b=-24 c=7
delta= (-24)2-4*4*7
delta= 576-112
delta= 464
pier. delty = 21,5
x1= 24+21,5/8= 5,7
x2= 24-21,5/8= 0,3
6x²-9x+4x-6>1
6x²-5x-6-1>0
6x²-5x-7>0
Δ=b²-4ac
Δ=25+168
Δ=193
-(3+2x)(1-2x)<3
-3+6x-2x+4x²-3<0
4x²+4x-6<0
Δ=16-96
Δ=-80
nieskonczenie wiele rozwiazan