No. "Best" is not well defined since there are many criteria for defining best.
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It is the parabolic function defined by the product (x+1)(x+5), with x intercepts at -1 and -5, y-intercept at (0,5) and a vertex at (-3, -4).
Five squared is 25
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five-tenths = 1/2 therefore, three-sixths = five-tenths
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