Use the FOIL method to check your answer from part A.

Answer:
[tex]x^{2} -8x+12[/tex] (that means u got it right)
Step-by-step explanation:
basically use the distributive property to multiply everything by each other.
x*x=[tex]x^{2}[/tex]
x*(-2) + x*(-6)= -8x
-6*-2=12
Put it all together and u get the original.
Sorry if this is confusing.