Решите уравнения (4x-3)(4x+-1)^2=3x. 16c^2-49=0

1. 16x² -9 -(16x² -8x +1) =3x
16x² -9 -16x² +8x -1 -3x =0
5x -10 =0
5x =10
x =2

2. 16c² -49 =0
(4c -7)(4c +7) =0
4c -7 =0, 4c =7, c1=7/4=1.75
4c +7 =0, 4c= -7, c2 = -1.75