(9x^2)-12x+4
This is the same as (3x-2)(3x-2), so use any method of multiplying, however I will show the FOIL method of multiplying polynomials.
F (First numbers in each polynomial): 3x*3x = 9x^2
O (Outside numbers): 3x*-2 = -6x
I (Inside numbers): -2*3x = -6x
L (Last numbers in each polynomial): -2*-2 = 4
Now just combine like terms to add these together and get (9x^2)-12x+4.
(If I did good enough, please mark this answer Brainliest to help me advance levels.)