x^2 +8x -17 = -6

x^2 +8x+ 16 -17 = -6 + 16

(x+4)^2 -1 = 10

(x+4)^2 = 11

x + 4 = ± sqrt(11)

x = -4 ± sqrt(11)

x = -4 – sqrt(11) and x = -4 + sqrt(11)

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