व्यंजकों 5x+4x^2+3 तथा 2x+4x^2-1 का योग ...

व्यंजकों `5x+4x^2+3` तथा `2x+4x^2-1` का योग होगा -

A

`7x+8x^2-2`

B

`7x+8x^2+2`

C

`7x-8x^2-2`

D

`7x-8x^2+2`

Verified by Experts

The correct Answer is:

B

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