matematikaaaaaaaaaaaa

1.  f'(x) = 4.3x³ - 2.4x +1
                12 x³ - 8x + 1
( 5x + 6 ) ( 2 - 7x )
10 x - 35 x² + 12 - 42 x
35.2 x + 10 - 42
(-70 x) - 32