Rhett decides to build a square room for his movie and music collection. If the area of the room is 9x2 − 6x + 1 square feet, what is the length of one side of the room?
A. (3x + 1) feet
B. (9x − 1) feet
C. (3x − 1) feet
D. (9x + 1) feet
I am stuck on this question please help thank you
4 answers
it is supposed to say 9x^2-6x+1
Since it is a perfect square, it's easy to check.
(a-b)^2 = a^2-2ab+b^2
so you know that a=3 and b=1
(3x-1)^2 = 9x^2-6x+1
(a-b)^2 = a^2-2ab+b^2
so you know that a=3 and b=1
(3x-1)^2 = 9x^2-6x+1
so it would be c?
Yes, C is correct
1 answer