Step-by-step explanation:
Hey there!!
Given;
[tex] = 6 {y}^{2} - 3 {y}^{3} + 6 {x}^{2} + 2 {y}^{3} + {y}^{3} - 3 {y}^{2} + 3 {y}^{2} [/tex]
Now combine like terms;
[tex] = 6 {y}^{2} - 3 {y}^{2} + 3 {y}^{2} - 3 {y}^{3} + 2 {y}^{3} + {y}^{3} + 6 {x}^{2} [/tex]
[tex] = 6 {y}^{2} + 6 {x}^{2} [/tex]
Take "6" common.
[tex]6( {y}^{2} + {x}^{2} )[/tex]
Hope it helps....
