You will get Brainly if if you answer correctly and provide step-by-step explanation pls help me I need help with five

Answer:
[tex]2x^2+xy-3y^2[/tex]
Step-by-step explanation:
Start by taking everything out of the parentheses:
[tex]3x^2-2xy-2y^2-x^2-(-3xy)-(y^2)[/tex]
Note two negatives make a positive:
[tex]3x^2-2xy-2y^2-x^2+3xy-y^2[/tex]
Combine like terms:
[tex]3x^2-x^2-2xy+3xy-2y^2-y^2[/tex]
Simplify
[tex]2x^2+xy-3y^2[/tex]