Decide what number must be added to the binomial to make a perfect square trinomial.
-$$x ^ { 2 } - 18 x$$
A)162
B)41
C)-9
D)81

Name: Decide what number must be added to the binomial to make a perfect square trinomial. -\[x ^ { 2 } - 18 x\] A)162 B)41 C)-9 D)81
Brand: Quizplus
Rating: 4.8 (41 reviews)

Question

Quizplus · Accepted Answer

To make a perfect square trinomial, take half of the coefficient of x, square it, and add it to the binomial. Half of -18 is -9, and (-9)^2 is 81.

Decide What Number Must Be Added to the Binomial to Make