Question

I want answers 4 these questions.... I will mark it as brainlist... plz give me step by step answer.. Already I asked this q many times but no one answered.. if anyone is answering I will mark it as brainlist..​

Answer 1

Answer:

I WILL ANSWER BUT WILL U MRK AS BRAINLIEST ???

Step-by-step explanation:

1)

(i)p(x) = (2)

the,

$2(2)^{3} - 13(2)^{2} + 17(2) +12 \\\\=2*8- 13*4 + 34 +12\\\\=16- 52 + 34 +12\\=16-52+46\\=16+46-52 \\=62 - 52\\= 10$

(ii) p =(-3)

$2(-3)^{3} - 13(-3)^{2} + 17(-3) +12 \\\\=2*(-27)- 13*9 -51 +12\\\\\\=-54 - 117-51 +12\\=-171-39\\=-210$

2) x= 4/3

then,

P(x)=

$6x^3 - 11x^2 + kx - 20 = 0\\6(\frac{4}{3} )^3 - 11(\frac{4}{3})^2 +\frac{4k}{3} = 0\\\\6(\frac{64}{27}) - 11(\frac{16}{9}) +\frac{4k}{3} = 0\\\\4.5(64) - \frac{176}{9} +\frac{4k}{3} = 0\\\\288 - 19.556+ \frac{4k}{3} = 0\\\\268.444+\frac{4k}{3} = 0\\\frac{805.332 + 4k}{3} = 0\\805.332 + 4k= 0\\805.332= - 4k\\\frac{805.332}{-4} = kk= -201.333$