L) 9x^2+16<0 Ł) 6x^2-x-2< lub równe 0 prosze to pilne
L) 9x^2+16<0
delta=0-4*9*16
delta<0
Ł) 6x^2-x-2< lub równe 0
delta=1-4*6*(-2)
delta=1+48
delta=49
pierw. z delty=7
x1=1-7/12=-6/12=-1/2
x2=1+7/12=8/12=2/3
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L) 9x^2+16<0
delta=0-4*9*16
delta<0
Ł) 6x^2-x-2< lub równe 0
delta=1-4*6*(-2)
delta=1+48
delta=49
pierw. z delty=7
x1=1-7/12=-6/12=-1/2
x2=1+7/12=8/12=2/3