Question

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ײ-2×-8=0

Answer 1

$x^2 -2x-8 = 0 \\ \\ S= \frac{-b}{a} = -2 \\ \\ \\ P= \frac{c}{a}= -8 \\ \\ \\ \\ -4+2= -2 \\ -4*2= -8 \\ \\ \\ S= (-4,2)$