Question

Porfavor ayudaaaaaaaaa rapidoo... Aunque sea un problema nada más :(

Answer 1

4) La clave correcta es la "C"

$2 {x}^{3} - 4 {x}^{2} + 5x + 6 - ( {x}^{3} - {x}^{2} + x + 3 - 2 {x}^{2} + 2x + 1) \\ 2 {x}^{3} - 4 {x}^{2} + 5x + 6 - {x}^{3} + {x}^{2} - x - 3 + 2 {x}^{2} - 2x - 1 \\ 2 {x}^{3} - {x}^{3} - 4 {x}^{2} + {x}^{2} + 2 {x}^{2} + 5x - x - 2x + 6 - 3 - 1 \\ {x}^{3} - {x}^{2} + 2x + 2$

5) La clave correcta es la "A"

$(2 {x}^{2} + 5x - 3) ( - 3 {x}^{2} ) \\ - 6 {x}^{4} - 15 {x}^{3} + 9 {x}^{2}$