Answer:
x^2-1
Step-by-step explanation:
you must use the distributive property
first you do x•x=x^2,
then you do x•1 and x•-1 to get x and -x and those cancel out,
the you do 1•-1=-1, then you put it together to get x^2-1
C
The two triangles are similar — that is, the three angles in triangle EDC correspond to those in ABC
Answer: i think the answer is B thousands
Step-by-step explanation:
