Answer:
4
Step-by-step explanation:
In completing the square, c is given by
Given,
a = 1, b = -4, c = ?
Since b = -4, substitute
---> Simplify
=
Therefore, 4 must be added to for it to be perfect square trinomial.
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Answers & Comments
Answer:
4
Step-by-step explanation:
In completing the square, c is given by![(\frac{b}{2})^2 (\frac{b}{2})^2](https://tex.z-dn.net/?f=%28%5Cfrac%7Bb%7D%7B2%7D%29%5E2)
Given,
a = 1, b = -4, c = ?
Since b = -4, substitute
Therefore, 4 must be added to
for it to be perfect square trinomial.