Question

3)efetue as adiçoes e subtraçoes de polinomios:
a) (12a +8b-3c) + (9a+5b-2c) =
b) (6y²-3xy+5x²) - (-2y²+6xy-2x²) =

Answer 1

$a)(12a+8b-3c)+(9a+5b-2c)=21a+13b-5c$



$b) (6y^2-3xy+5x^2)-(-2y^2+6xy-2x^2)=8y^2-9xy+7x^2$


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