What is the simplified form of the following expression? 4x2 + 3xy−2y+xy−x2

Answer 1

To simplify the expression 4x^2 + 3xy - 2y + xy - x^2, we can combine like terms.

Combining the terms involving x^2, we have (4x^2 - x^2) which simplifies to 3x^2.

Combining the terms involving xy, we have (3xy + xy) which simplifies to 4xy.

Finally, combining the terms involving y, we have (-2y) remaining.

Therefore, the simplified form of the expression is 3x^2 + 4xy - 2y.

Answer 2

To which subset of real numbers does the following number belong: 65−−√