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h,k=centro r=radio
1)
h=-4 k=-7 r=√24=2√6
centro=(-4 , -7) diametro=4√6
2)
y=4 organizo y simplifico la cuadratica
factorizando
8*4=32 8+4=12
(x-8)(x-4)
x=8 o x=4