Question

escreva os polinomios na sua forma reduzida:
4x+(7y-4x-x+3y)-x+y

-2a² +4-(2a²-5-1+2a²)+(-3a²-2)

Answer 1

=4x+7y-4x-x+3y-x+y
=4x-4x-x-x+3y+y
=0-x-x+7y+3y+y
=10y

-2a²+4-(2a²-5-1+2a²)+(-3a²-2)
=-2a²+4-2a²+5+1-2a²-3a²-2
=-2a²-2a²-2a²-3a²-2+4+5+1
=0-5a²+2+5+1
=-5a²+8