Respuesta :

The expression given is.

[tex]2x^2-5xy-6+4x^2-3xy+1-x^2y[/tex]

Simplify the expression.

[tex](2x^2+4x^2)-(5xy+3xy)-x^2y-6+1[/tex]

Again simplify it more,

[tex]6x^2-8xy-x^2y-5[/tex]

It can further written as,

[tex]undefined[/tex]

Hence the correct option is C.

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