Question

if one zero of quadratic polynomial x²-x(2 + 2 k)is -4 find the value of k

Answer 1

since -4 is a zero of given polynomial
i.e, x^2-x(2+2k) becomes zero for x=-4
here the value of k is (-4)^2+4(2+2k)=0
16+8+8K=0
8K+24=0
k=-3