Step-by-step explanation:
part 1 : explaining how to get the coordinates of B
part 2 : the gradient of BD
Answer:
c is your answer
Step-by-step explanation:
please mark brailiest
X2, or 2X or X times 2, or X•2.
If a root is a+√b then another is a-√b because of quadatic formula
r2=1-√5