Find the value of a and the value of b when x^2 – 16x + a = (x + b)^2
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x^2 - 16x + a = x^2 + b^2 + 2xb
or 2xb + 16x = a - b^2
or x = (a - b^2)/(2b + 16)
or 2xb + 16x = a - b^2
or x = (a - b^2)/(2b + 16)
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