f(x)=a(x-2)(x+1) A=(1,6)czyli
6=a(1-2)(1+1)
6=-2a
a=-3
f(x)=-3(x-2)(x+1)=-3(xkwadrat + x- 2x-2)=-3xkwadrat -3x+6x+6= -3xkwadrat+3x+6
b=3 c=6
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f(x)=a(x-2)(x+1) A=(1,6)czyli
6=a(1-2)(1+1)
6=-2a
a=-3
f(x)=-3(x-2)(x+1)=-3(xkwadrat + x- 2x-2)=-3xkwadrat -3x+6x+6= -3xkwadrat+3x+6
b=3 c=6