Question

pls solve, nobody has been answering this question

Answer 1

Answer:

why

Step-by-step explanation:

you delete my answer im

so angry

Answer 2

Answer:

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

Step-by-step explanation:

because if we subtract

${2y}^{2} + {2x }^{2} - 1 + 2xy \\ - {2y}^{2} + {7x}^{2} + 4 - 6xy$

then it will come.