I have the answer as -4x^2-15xy-2y^2
Is this correct
add
(3x^2-9xy+y^2)+(-8x^2-7xy-y^2)+(x^2+xy-2y^2)
2 answers
Looks good to me
(3x^2-9xy+y^2)+(-8x^2-7xy-y^2)+(x^2+xy-2y^2)
2 answers