Question

please answer me with someone it's a humble request from me please na yrr plzz nd fast ❤❤​

Answer 1

Answer:

-5x^2 + xy + 4y^2

Step-by-step explanation:

  -2x^2 - 9xy + 5y^2                                  4y^2  -  8xy

(+) x^2  + 5xy + y^2                             (+)  -2y^2 + 3xy + 4x^2

-------------------------------                              -----------------------------

-x^2 - 4xy + 6y^2 ----- (i)                             2y^2 - 5xy + 4x^2  -------- (ii)

subtracting (ii) from (i),

-x^2   - 4xy + 6y^2

 4x^2 - 5xy +2y^2

(-)       (+)      (-)                         (changing the signs,)

----------------------------

-5x^2 + xy + 4y^2

Pls mark me brainliest!