The area of a square is defined by a(x)= x^2 -6x + 9. what is the length of a side of the square? a. x= 1 b. x= 3 c. x= 6 d. x= 9 and explain!

the answer is c

Step-by-step explanation:

i just took a test with this question on it.

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

i hope this is what you were looking for.

see attached graph