Question

Simplify: *

(2x2 + 3xy – 3y?) - (x² - y²) =​

Answer 1

Answer:

So x^2 + 2xy - y^2 must be added.

Step-by-step explanation:

Let "a" be added to x^2 + xy +y^2 to obtain 2x^2 + 3xy

So a = 2x^2 + 3xy - (x^2 + xy + y^2)

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

= x^2 + 2xy - y^2.

So x^2 + 2xy - y^2 must be added.

Answer 2

Answer:

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Step-by-step explanation:

See the attachment...