Question

8) Dados os polinomios A = x² - 3x + 5, B = x² + 2x - 4 e C = x² + 5 - 1, Calcule:

a) A + B;

b) A + B + C;

c) A + C;

d) B+C.​

Answer 1

Resposta:

a) A + B;

${x}^{2} - 3x + 5 + {x}^{2} + 2x - 4 \\ 2 {x}^{2} - x + 1$

b) A + B + C;

${x}^{2} - 3x + 5 + {x}^{2} + 2x - 4 + {x}^{2} + 5x - 1 \\ 3 {x}^{2} + 4 x$

c) A + C;

${x }^{2} - 3x + 5 + {x}^{2} + 5x - 1 \\ 2 {x}^{2} + 2x + 4$

d) B+C.

${x}^{2} + 2x - 4 + {x}^{2} + 5x - 1 \\ 2 {x}^{2} + 7x - 5$