Упростить:
4x-(25-16x^2)/(5-4x)=4x-(5-4x)(5+4x)/(5-4x)=4x-5-4x=-5
(4X*(5-4X) - (25 - 16X^2 ) \ 5-4X = (20X - 16X^2 - 25 + 16X^2 ) \ 5-4X = (20X - 25) \ 5-4X =
= 5*( 4X - 5) \ 5 - 4X = - 5*(5 - 4X) \ 5 - 4X = - 5
Ответ: минус пять