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z postaci iloczynowej przechodzimy na ogólną
-x²+6x+4x-24=0
-x²+10x-24=0
x²-10x+24=0
Δ= 100-4*1*24=100-96=4 √Δ=2
x1=10-2/2=4 x2=10+2/2=6
p=10/2=5 q=4/4=1 a=1
f(x)=1(x-5)+1
d) f(x)=-2x²-10x
p=10/-4=-5/2 =- 2 1/2
Δ=100-4*(-2)*0=100
q=100/-8= -25/8 = - 3 1/8
f(x)=-2(x+2 1/2) - 3 1/8