5 over z sqaure -8*z+7 eqaul 1 over 4z+4 HELP!!!!!

5 / (z^2 - 8z + 7 )  =  1 / [4z + 4]   cross-multiply

5 [ 4z + 4]  = z^2 - 8z + 7   simplify

20z + 20  = z^2 - 8z + 7       subtract 20z + 20 from both sides

0  = z^2 - 28z - 13

Using the quadratic formula....the solutions  are    14 ± √209