Question

add the expression 4x² + 3xy² + 9y² and 2x² - 9xy + 6y² and find the degree​

please

Answer 1

$4 {x}^{2} + 2 {x}^{2} + 3x {y}^{2} + 9 {y}^{2} + 6 {y}^{2} - 9xy$

$6 {x}^{2} + 15 {y}^{2} + 3x {y}^{2} - 9xy$