Question

efetue as adicoes algébricas, reduzindo os polinomios
a) (x+y) - (-x-y)
b) ( 3a-2b)+ ( - a + 4b)

Answer 1

a) (x+y) - (-x-y)
     x+y+x+y
     x+x+y+y
     2x+2y



b) ( 3a-2b)+ ( - a + 4b)
       3a-2b-a+4b
       3a-a-2b+4b
       2a+2b