F left x right )= 4x 2 - 50x 126 July 8, 2019 16 32 64 128 For the function f(x)= frac left( sqrt 5 x -7 right)^ 7 6 f(x)= 6 ( 5 x −7) 7 find f^ -1 (x)f −1 (x)
