Decide what number must be added to the binomial to make a perfect square trinomial.
-$$x ^ { 2 } - \frac { 1 } { 2 } x$$
A) $- \frac { 1 } { 8 }$
B) $- \frac { 1 } { 6 }$
C) $\frac { 1 } { 4 }$
D) $\frac { 1 } { 16 }$

Question

Quizplus · Accepted Answer

To make a perfect square trinomial from $x^2 - \frac{1}{2}x$, you need to add $\left(\frac{-\frac{1}{2}}{2}\right)^2 = \left(-\frac{1}{4}\right)^2 = \frac{1}{16}$.

Decide What Number Must Be Added to the Binomial to Make