Question

if the polynomial f(x)=x³-7x+k when divided by( x-1)leaves the remainder 2,then k=

Answer 1

using the formula Divider=divident +reminder


or using discrimination also

Answer 2

x-1=0. then x =1. substitute value of x in f(x) 2=1*1*1-7*1+k 2=1-7+k 2=-6+k k=6+2 therefore value of k is 8