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Postac kanoniczna:
y=a(x-p)²+q
p=-b/2a
p=3/4
q=-Δ/4a
Δ=3²-4*2=9-8=1
q=-1/8
Odp. f(x)=2(x-3/4)²-1/8
2.
f(x)=-2*(x²+2x+1)-4=-2x²-4x-2-4
Odp. f(x)=-2x²-4x-6