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If A = 5x^2 + 3xy + 2y^2, B = - 2y^2 - 3...

If A = `5x^2 + 3xy + 2y^2`, B = - `2y^2 - 3xy + 4x^2` then A + B __

A

9`x^2` + 6xy

B

4`y^2`

C

`x^2` + 4y + 6xy

D

9`x^2`

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