All given xd ur welcome so ez
Answer:
i don't know exactly.
Step-by-step explanation:
but the might be an angle tool online.
Answer: X^2-x-1=y
Step-by-step explanation:
Multiply every number inside the parentheses
(X+3)(x-4)
X^2-4x+3x-1
Add all similar numbers and we get
X^2-X-1