Question

PLZ HELP QUICKLY!!!!!!!

Answer 1

To complete the square (x+2/5)^2 it would be x^2+(4/5)x+4/25

Answer 2

Answer:

$x^2+\frac{4}{5}x+\frac{4}{25}$

$\left(x+\frac{2}{5} \right)^2$

Step-by-step explanation:

Taking the middle coefficient:

$ax^2+bx+c$

$c=\left(\frac{b}{2} \right)^2$

$c=\left(\frac{\frac{4}{5} }{2} \right)^2$

$c=\left(\frac{4 }{10} \right)^2$

$c=\left(\frac{2 }{5} \right)^2$

$c=\frac{4}{25}$

Completing the square:

$x^2+\frac{4}{5}x+\frac{4}{25}$

$\left(x+\frac{2}{5} \right)^2$