Question

please can anyone do this ​

Answer 1

Answer:

2x^2 + xy - 2y^2

Step-by-step explanation:

At first we will find the sum that has been mentioned

That is:

(x^2 - xy + y^2) + (3x^2 + 2xy - 2y^2)

x^2 - xy + y^2 + 3x^2 + 2xy - 2y^2

4x^2 + xy - y^2

Now according to the question we need to subtract 2x^2 - y^2 from the sum so we will write

4x^2 + xy - y^2 - (2x^2 - y^2)

4x^2 + xy - y^2 - 2x^2 - y^2

2x^2 + xy - 2y^2

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