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q=8
q=1/2(-2+6)=2
f(x)=a(x-2)²+8
f(-2)=a*16+8=0
16a=-8
a=-1/2
f(x)=-1/2(x²-4x+4)+8
f(x)=-1/2 x²+2x+6
7.
p=-1
q=-2
f(x)=a(x+1)²-2
f(0)=a-2=1
a=3
f(x)=3(x²+2x+1)-2
f(x)=3x²+6x+1