Resposta :
Resposta:
a) ( 2x2 – 8x + 3) + ( 3x2 + 5x - 1)
[tex]2x^{2}[/tex] - 8x + 3 + [tex]3x^{2}[/tex] + 5x - 1
[tex]5x^{2}[/tex] - 3 + 2
d) ( 5x2 - 2x + 7) - (3x2 + 7x - 1)
[tex]5x^{2}[/tex] - 2x + 7 - [tex]3x^{2}[/tex] - 7x + 1
[tex]2x^{2}[/tex] - 9x + 8