Question

add 2n²+9ny+9 and -5n²-9ny+19​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

Adding $2n^{2} +9ny+9$  and  $-5n^{2} -9ny+19$ is $-3n^{2} +28$ .

Step-by-step explanation:

Given two polynomials $2n^{2} +9ny+9$  and  $-5n^{2} -9ny+19$ .

And we asked to add the polynomials.

Polynomial addition are done by adding the corresponding coefficients of same variables. That is add the coefficients of $n^{2}$ , $ny$, and the constants separately.

Therefore, $(2n^{2} +9ny+9)\ +\ (-5n^{2} -9ny+19) = -3n^{2} +0ny+28$

                                                                               $=-3nx^{2} +28$

Hence the answer.

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