Question

using division algorithm if 7x^2-4x+k is completely divisible by x^2-1 find k

Answer 1

Answer:

k = -7

Step-by-step explanation:

Given Equation is 4x³ - 7x² - 4x + k

It is completely divisible by x² - 1.

Then,

Put x² - 1 = 0

=> x² = 1

=> x = 1,-1

When x = 1:

⇒ 4(1)³ + 7(1)² - 4(1) + k = 0

⇒ 4 + 7 - 4 + k = 0

⇒ k = -7

Hope it helps!

Answer 2

Answer:

k= -7

Step-by-step explanation:

please follow me and Mark as brainliest

thanks