ПОМОГИТЕ. Пожалуйста!!!

a) y` = 6 $x^{2}$ + 4 $x^{3}$ - 2;

б)y` = 8x + 4sinx - $\frac{1}{2\sqrt{x}}$

в)y` = 6x $\sqrt{x}$ + $\frac{2x}{3\sqrt{x}}$

г)y` = 2x*cosx + 2*sinx

д)y` = $\frac{15x-10-15x-30}{9x^{2}-12x+4}$ = - $\frac{40}{9x^{2}-12x+4}$

е)y` = $\frac{16x^{3}+40x-16x^{3}+12x}{4x^{4}+20x^{2}+25}$ = $\frac{52x}{4x^{4}+20x^{2}+25}$

а)y` = 12x + 2; y`(-5) = -60 + 2 = -58; y`(-5) = -58;

б) y` = $3x^{2}*sqrt{x}$ + $\frac{x^{3}}{2sqrt{x}}$ ; y`(9) = 729 + $\frac{729}{6}$ = 729 + 121.5 = 850.5; y`(9) = 850.5