Question

value: 5
what number will make this expression a perfect square trinomial?
$x^2 - 6x + $___
a. 9
b. 12
c. 14
d. 7

Explanation:

Step1: Identify linear term coefficient

The linear term is $-6x$, so its coefficient is $-6$.

Step2: Calculate half the coefficient

$\frac{-6}{2} = -3$

Step3: Square the result

$(-3)^2 = 9$

Answer:

a. 9