Question

ayudaaaaáaaaaaaaasssaaasaaaaaaa doy coronita ​

Answer 1

Explicación paso a paso:

$a) \: 15 {x}^{2} - 25x + 3x - 5 \\ 15 {x}^{2} - 22x - 5 \\ \\ b) \: 42 {y}^{4} - 7 {y}^{3} + 7 {y}^{2} + 30 {y}^{3} - 5 {y}^{2} + 5y \\42 {y}^{4} - 7 {y}^{3} + 30 {y}^{3} + 7 {y}^{2} - 5 {y}^{2} + 5y \\ 42 {y}^{4} + 23 {y}^{3} + 2 {y}^{2} + 5y \\c) \: 6 {x}^{2} - 4x - 15x + 10 \\ 6 {x}^{2} - 19x + 10 \\ d) \: 3 {r}^{3} - 9 {r}^{2} + 15r - 2 {r}^{2} + 6r - 10 \\ 3 {r}^{3} - 9 {r}^{2} - 2 {r}^{2} + 15r + 6r - 10 \\ 3 {r}^{3} - 11 {r}^{2} + 21r - 10$