Timoxa987 1) y'=2×4x-3×2(x^2)+x-4=9x-6x^2-4
2) -4/(x^2) - 2/(sqrtx) + 1/2
3) 2x × (4-2x) + x^2 × (-2) = 8x - 6x^2
Вроде так....

MizoriesKun 1) y⁾=8x-6x²+x-4 = -6х²+9х-4

2) y⁾= (-4/x²) - (2/√x)+1/2

3) y⁾=2x*(4-2x) +x²*(-2) = 8x-4x²-2x²= - 6x²+8x