Question

pfv ajudem to presizando recuperar nota

085940772b6d29e033e8d613120a39c1.docx

Answer 1

Resposta:

$a) \: \: \: 8x + 4y - 6x + y \\ 8x - 6x + y + 4y \\ 2x + 5y \\ \\ b) \: \: \: {13a}^{2} + {5b}^{2} - {7a}^{2} + {3b}^{2} \\ 13 {a}^{2} - {7a}^{2} + 3 {b}^{2} + {5b}^{2} \\ {6a}^{2} + {8b}^{2} \\ \\ c) \: \: \: x + y + x + 2x + y \\ x + x + 2x + y + y \\ 2x + 2x + 2y \\ 4x + 2y$