Question

x2+y2-2xy,-2x2-y2and 3x2+y2+xy horizontal method adding

Answer 1

Answer:

the answer is 2x2+y2-xy

Answer 2

Answer:

=x

2

+y

2

−2xy+(−2x

2

−y

2

−2xy)+(3x

2

+y

2

+xy)

=x

2

−2x

2

+3x

2

+y

2

−y

2

+y

2

−2xy−2xy+xy

=2x

2

+y

2

−3xy

Step-by-step explanation:

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