Question

plz answer this question​

Answer 1

Answer:

( 4(x^2))-(y^2)

Step by step explanation:

$2 {x}^{2} - 3 {y}^{2} + 5 {x}^{2} + 6 {y}^{2} + ( - 3 {x}^{2} - 4 {y}^{2} ) \\ = 2 {x}^{2} + 5 {x}^{2} - 3 {x}^{2} + 6 {y}^{2} - 3 {y}^{2} - 4 {y}^{2} \\ = {x}^{2} (2 + 5 - 3) + {y}^{2} (6 - 3 - 4) \\ = 4 {x}^{2} + ( - 1) {y}^{2} \\ = 4 {x}^{2} - {y}^{2}$

I hope you are clear if not just comment and don't forget to mark my answer as the brainliest.