Question 1103524
Write the equation y=x^2-8x in the form y=a(x-h)^2 +k
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y=x^2-8x
complete the square of x^2-8x
x^2-8x+16
--> y+16 = x^2-8x+16
y+16 = (x-4)^2
y = (x-4)^2 - 16
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a = 1