(3x2+2xy−y2)+(x2+4xy−y2)(1 point)

Responses

3x2−6xy−2y23 x squared minus 6 x y minus 2 y squared

4x4−6xy−2y44 x to the 4th power minus 6 x y minus 2 y to the 4th power

4x2+6xy+2y24 x squared plus 6 x y plus 2 y squared

4x2+6xy−2y2