Question

Dados os polimonios A = x² - 3x + 5
B = x² + 2x - 4
C = x² + 5x - 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;

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

c) A + C;

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

d) B + C.

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