Question

me ajudem porfavorrrrrrrrrr​

Answer 1

Resposta:

a) A + B

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

b) A + B + C

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

c) A + C

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

d) B + C

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