tera Group Title what number must be added to the polynomial to complete square x^2+x 3 years ago 3 years ago

1. satellite73 Group Title

$\frac{1}{4}$

2. satellite73 Group Title

i know it seem so random. half of 1 is 1/2 and 1/2 squared is 1/4. what 1? the coefficient of the "x" term