Question

Dados os polinômios A = x - 3x + 5, B = x² + 2x - 4 e C = x2 + 5x - 1, calcule:
a) A + B
b) A + B + C
c) A + C
d) B + C
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Answer 1

a) x² -3x +5 +x² +2x -4

   3x² -x +1

b) x² -3x +5 +x² +2x -4 +x² +5x -1

   3x² +4x +5

c) x² -3x +5 +x² +5x -1

   2x² +2x +4

d) x² +2x -4+ x²+ 5x -1

   2x² +7x -5