Find the sum: (3xy-9y²)+(5x²+7y²)
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Answer:
-9y^2+7y^2 +5x^2+3xy
-2y^2+5x^2+3xy
Step-by-step explanation:
this is only answer as only two values are like
hop it helps you
Step-by-step explanation:
(3xy-9y^2)+(5x^2+7y^2)
3xy(5x^2+7y^2)+ -9y^2(5x^2+7y^2)
15x^3y+21xy^3-45x^2 y^2-63y^4