Question

(13y2+7xy+17y)+(8y2-10xy+6)

Answer 1

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Answer 2

21y^2-3xy+17y+6

Answer 3

-3xy+13y^2+99y+6

Answer 4

All you need to do is add the coefficients in front of the like terms. So (13+8)y^2+(7-10)xy+17y+6=21y^2-3xy+17y+6