Question

F(x)=2x^3+kx^2-2x-3 and x-1

Answer 1

Answer:

k = 3

Step-by-step explanation:

f(x) = 2x³ + kx² - 2x - 3

x - 1 = 0

x = 1

put x in f(x)

f(1) = 2(1)³ + k(1)² - 2(1) - 3

2(1) + k - 2 - 3

2 + k - 2 - 3

k - 3 = 0

k = 3

Answer 2

Answer:

X - 1 = 0

X = 1

let p(x) = 2x^3 + kx^2 - 2x - 3

p(1) = 2 × 1 + k × 1 - 2 × 1 - 3

p(1) = k - 3

then,

k - 3 = 0

k = 3