I don't know what I'm doing wrong on this one. I don't know how to solve it and partial fraction decomposition isn't working...

4x dx = A JB = A ( X- 4)4B ( x - 4 ) x 2- 8x+16 * - 4 x - 4 = AX - AA + B X- yB ( x - 4 ) ( x - 4 ) = 4( x * ( At B ) - 41- 4B 1x2 - 8x +16 AtB = :1. U X = (A+ B ) ( x 4 ) AX- YA + BX - 4B A = 1 - B 0 = - 4 A- 4B TX to = X (AtB ) - YA - 4B 0 = - 4 CATBY - 4(A+ 13 0 - - 4 (4 B ) - 4B 4 = 1FB 0= - 16 + 4B- 4B WE 4 4 X +0= X (AtB) - 4 ( At B ) O = - 4A - 4B 4 = AtB 0 = - 4 A - 413 0 = - 4 ( 1 - B ) - 4B B = 4 - A 0 = - 41 - 4(4 -A 0 = - 4 + 4B/ 4B - 41-16+LA 4 X ( X - 4 ) 2