[ПОМОГИТЕ РЕШИТЬ ПРОИЗВОДНУЮ] y=(3-2x)'(5+4x^2)=3

y = ( 3 - 2 * x ) * ( 5 + 4 * x ^ 2 ) ; y \' = ( ( 3 - 2 * x ) * ( 5 + 4 * x ^ 2 ) ) \' = ( 3 - 2 * x ) \' * ( 5 + 4 * x ^ 2 ) + ( 5 + 4 * x ^ 2 ) \' * ( 3 - 2 * x ) = ( 3 \' - 2 * x \' ) * ( 5 + 4 * x ^ 2 ) + ( 5 \' + 4 * ( x ^ 2 ) \' ) * ( 3 - 2 * x ) = - 2 * ( 5 + 4 * x ^ 2 ) + 4 * 2 * x * ( 3 - 2 * x ) = - 2 * ( 5 + 4 * x ^ 2 ) + 8 * x * ( 3 - 2 * x ) = - 10 - 8 * x ^ 2 + 24 * x - 16 * x ^ 2 = - 24 * x ^ 2 + 24 * x - 10 = 24 * x ^ 2 - 24 * x + 10. Ответ : y \' = 24 * x ^ 2 - 24 * x + 10.