Question

Ayudaaaaaa necesito esooo para hoyy :v nooooo

Answer 1

Respuesta:

1.

a)

$= 6 {x}^{3} - 4 - 2 {x}^{3 + 9} \\ = 4 {x}^{3} + 5$

b)

$= {g}^{3} - 2 {g}^{2} + 5g + 6 - {g}^{2} - 2g \\ = {g}^{3} - 3 {g}^{2} + 3g + 6$

c)

$= 4 + 2 {a}^{2} - 2a - 3 {a }^{2} + 8a - 7 \\ = - {a}^{2} + 6a - 3$

d)

$= 8y - 4 {y}^{2} + 3y - 9 {y}^{2} \\ = - 13 {y}^{2} + 11y$

e)

$= - 4 {z}^{3} - 2z + 8 - 4 {z}^{3} - 3 {z}^{2} + 5 \\ = - 8 {z}^{3} - 3 {z}^{2} - 2z + 13$

f)

$= - 7 {t}^{2} + 4ts - 6 {s}^{2} - 5 {t}^{2} - 12ts + 3 {s}^{2} \\ = - 12 {t}^{2} - 8ts - 6 {s}^{2}$

g)

$= 6 - 7y + 3 {y}^{2} + 3 - 5y - 2 {y}^{2} - 12 - 8y + {y}^{2} \\ = 2 {y}^{2} - 20y - 3$

h)

$= 3 {n}^{3} + 3n - 10 - 4 {n}^{2} + 5n + 4 {n}^{3} - 3 {n}^{2} - 9n + 4 \\ = 7 {n}^{3} - 7 {n}^{2} - n - 6$

2. a)

$T= D + C \\ </p><p> = (2n + 3) + (n + 4) \\ </p><p> = 2n + 3 + n + 4 \\ </p><p> T = 3n + 7$