Answer: m <PQR =600. 3x = 5X-20. -2x =- 20.
Step-by-step explanation:
Answer:

Step-by-step explanation:
The three interior angles in a triangle will always add up to 180°.
Therefore

To simplify this expression you would factor out the greatest common factor which is y^2.
9y^2 - 11xy^2 -----> Factor out y^2
y^2(9 - 11x) ----> This should be as far as you can go, meaning this is your final answer!
Hope this helps!