By completing the square, solve x2+8x−12=0x^2 + 8x - 12 = 0x2+8x−12=0 Give your answers in surd form. Hence, solve (x−2)2+8(x−2)−12=0(x - 2)^2 + 8(x - 2) - 12 = 0(x−2)2+8(x−2)−12=0.
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