1) given -1/2 and k are the roots of the equation quadratic 2x²+hx-4=0,find the value of h and the value of k

2)given -3/4 and m are the roots of the equation quadratic
8x²+26+K=0,find the value of m and the value of k

3)given -3/2 and t are the roots of the equation quadratic 2x(x-n)=x-3, find the value of n and the value of t

please help me