### Home > PC > Chapter 1 > Lesson 1.4.1 > Problem1-136

1-136.

Fill in the blanks to make the following equations correct.

1. $x^{2} + 6x + \text{____} = \left(x + 3\right)^{2}$

$9$

1. $x^{2} − \text{____} x + 16 = \left(x − 4\right)^{2}$

$8$