Answer:
A
Step-by-step explanation:
(x-4)^2 = x^2 -4x -4x + (-4)*(-4)
= x^2-8x+16 as required
Answer:
question 12 is answer B
question 13 is -8x^3
Step-by-step explanation:
exponent rule 
E = 3(6^2)
E = 3(36)
And your answer is E = 108 :)
Answer:
It's C; you did it right.