When solving the equation x2-8x-7=0 by completing the square

Answers

Answer 1

Answer: $x^(2) -8x=7 \n x^(2) -8x+(-4)^(2) = 7 + (-4)^(2) \n x^(2) -8x+16 = 7 + 16 \n (x-4)^(2) =23 \n x-4= √(23) \n x-4= \pm 4.8 \n x= \pm 4.8+4$
x = 4.8 + 4 or -4.8 + 4
x = 8.8 or -0.8

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Answers

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