Answer:
B) 9x² + 6x + 1
Step-by-step explanation:
use the FOIL method:
(3x + 1)(3x + 1)
F: 3x(3x) = 9x²
O: 3x(1) = 3x
I: 3x(1) = 3x
L: 1(1) = 1
combine the 'like terms' in the middle to get 6x
answer: 9x² + 6x + 1
the answer is B. 9x^2 + 6x+1
