First I marked this as ABCD triangle for the easy access.
Then ABC triangle was considered and according to the pythagorus relationship X was found.
Then according to the ACD triangle, and ABD triangles the following equations were taken.
According to the 3rd photo the answer is taken
It's [0, 68]. To find the product of these, perform the following: [(3*4)+(-1*2)+(-2*5)]=0 and [(5*4)+(4*2)+(8*5)]=68
Where is the rest of the question? Anyways maybe this picture will help.
Ans The first answer.
Step-by-step explanation:
(0,-1)