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Sneak Preview Problem: Report Error Fill in the blank with a constant, so that the resulting quadratic is the square of a binomial.\$$$x^2 + \dfrac{4}{5}x + \underline{~~~~}$$$

Jul 30, 2020

#1
0

Completing the square: $$\displaystyle \left( x + \frac{4}{5} \right)^2 = x^2 + \frac{4}{5} x + \frac{16}{25}$$

Constant = 16/25

Jul 30, 2020
#2
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@guest who just answered the question, thats wrong.. :)

Jul 30, 2020
#3
+26006
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take 1/2 of the   'x' coefficient and add it to the equation

1/2 * 4/5   = 4/10       squared =     16/100        or      8/50    or    4/25

Jul 30, 2020