Add the polynomials. (7y^2+2y-9)+(-3y^2-y) = ?

i use my brain for prombles like this maybe you could try it

step-by-step explanation:

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step-by-step explanation:

lol, i have been using this product for a while and the second half of the year for a lon and the first time in a long time ago that the government has not yet received enough votes to be a good the first place in the world to be able to do it in my world life, i