The first option is correct here: ![-13y^4 + 3x^4 - 8x^2y^2 + x^3y + 9x y^3](https://tex.z-dn.net/?f=-13y%5E4%20%2B%203x%5E4%20-%208x%5E2y%5E2%20%2B%20x%5E3y%20%2B%209x%20y%5E3)
<h3>Given the
polynomial:</h3>
![9xy^3 - 4y^4 - 10x^2y^2 + x^3y + 3x^4 + 2x^2y^2 - 9y^4](https://tex.z-dn.net/?f=9xy%5E3%20-%204y%5E4%20-%2010x%5E2y%5E2%20%2B%20x%5E3y%20%2B%203x%5E4%20%2B%202x%5E2y%5E2%20-%209y%5E4)
<h3 /><h3>Simplification:</h3>
Combine the like terms together as shown below:
![9xy^3 - 4y^4 - 10x^2y^2 + x^3y + 3x^4 + 2x^2y^2 - 9y^4\\= (-4y^4 - 9y^4) + 9xy^3 + (-10x^2y^2 + 2x^2y^2) +x^3y +3x^4\\= -13y^4 +9xy^3 -8x^2y^2 + x^3y + 3x^4\\= -13y^4 +3x^4 -8x^2y^2 + x^3y + 9xy^3](https://tex.z-dn.net/?f=9xy%5E3%20-%204y%5E4%20-%2010x%5E2y%5E2%20%2B%20x%5E3y%20%2B%203x%5E4%20%2B%202x%5E2y%5E2%20-%209y%5E4%5C%5C%3D%20%28-4y%5E4%20-%209y%5E4%29%20%20%2B%209xy%5E3%20%2B%20%28-10x%5E2y%5E2%20%2B%202x%5E2y%5E2%29%20%2Bx%5E3y%20%2B3x%5E4%5C%5C%3D%20-13y%5E4%20%2B9xy%5E3%20-8x%5E2y%5E2%20%2B%20x%5E3y%20%2B%203x%5E4%5C%5C%3D%20-13y%5E4%20%2B3x%5E4%20%20-8x%5E2y%5E2%20%2B%20x%5E3y%20%2B%209xy%5E3)
Thus, the first option is correct here: ![-13y^4 + 3x^4 - 8x^2y^2 + x^3y + 9x y^3](https://tex.z-dn.net/?f=-13y%5E4%20%2B%203x%5E4%20-%208x%5E2y%5E2%20%2B%20x%5E3y%20%2B%209x%20y%5E3)
For more information, refer to:
brainly.com/question/10689855
Answer:
(3, -6) reflected across the x axis
(-3, 6) reflected across the y axis
Step-by-step explanation:
Answer:
none
Step-by-step explanation:
9514 1404 393
Answer:
x = 20
Step-by-step explanation:
The external angle at V is half the difference of the subtended arcs:
(65° -25°)/2 = x° = 40°/2
x = 20