Question

if p(x) =3x3-2x2+x-9 find p(-1) and p(3)​

Answer 1

Step-by-step explanation:

p(x) = 3x³ - 2x² - x + 4

p(- 1) = 3(-1)³ - 2(-1)² - (-1) + 4

p(- 1) = 3 × (-1) - 2 × 1 + 1 + 4

p(- 1) = - 3 - 2 + 5

p(- 1) = - 5 + 5 = 0

p(- 1) = 0

So, as per Factor Theorem

-1 is zero if p(x)

Answer 2

Answer:

$p( - 1) = 3 \times 3 - 2 \times 2 - x + 4 \\ p( - 1) = 9 - 4 - ( - 1) + 4 \\ p( - 1) = 9 - 4 + 1 + 4 \\ p ( - 1) = 9 + 1 \\ p( - 1) = 10 \\ give \: me \: some \: multiple \: thanks \: please \:$