Question

Thee sum of two expression is is x²-y² +3y-5. If one of them is 2y² + 2x-y-10, Find the other. ​

Answer 1

Answer:

Let the unknown expression be z. Then,

2y² + 2x-y-10 + z = x²-y² +3y-5

z = x² - 3y² - 2x + 4y + 5

Hence, the other expression is x² - 3y² - 2x + 4y + 5.