What value of p will make (x2 2 - 4x + p) a perfect square?

What value of p will make (x2 ${}^2$ - 4x + p) a perfect square?

Answer Details

(x2 ${}^{\mathrm{<br>}}$ - 4x + p)

Use the coefficient of the middle variable(-4x)

= (−42
)2 ${}^{\mathrm{<br>}}$

= (-2)2 ${}^{\mathrm{<br>}}$

= 4