I think it’s c but don’t go with me see if others answer with a different answer :)
Answer:
(1.5, 10.5)
Step-by-step explanation:

Answer:
therefore angle Y will be equal to angle X by vertically opposite angle as by taking all the angles inside the traingle will be equal to Y so Y = X = 60°
Answer:
x^4+2x^3y-3x
Step-by-step explanation: