Question

if the value of the polynomial p(x)= x⁴+2x³-3x² + kx-1 is 21 ,when x=2 , then k= ?​

Answer 1

Answer:

k=1

Step-by-step explanation:

(2⁴)+2(2³)-3(2²)+k(2)-1=21

16+16-12+2k-1=21

2k+19=21

2k=2

Therefore, k=1.

HOPE THIS HELPS!

Answer 2

Answer:

the value of k =1

hope it helps you..