Question

If x 4 -4x 2 +5x-k is completely divisible by x-4 , then find the value of k

Answer 1

x^4-4x^2+5x-k=0 Given that this is divisible by x-4 So v vl put x=4 in given eq 4^4-4(4)^2+5(4)-k=0 216-64+20=k K=172