What should be subtracted from 4x² + 2xy -3y² to obtain x² + y² + – InterviewSolution

1.

What should be subtracted from 4x² + 2xy -3y² to obtain x² + y² + 3xy?

Answer»

Answer:

3x²-xy-4y²

Step-by-step explanation:

4x²+2xy-3y²-(x²+y²+3xy)

= 4x²+2xy-3y²-x²-y²-3xy

= 3x²-xy-4y²

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