Помогите найти производную

1)у=2х-х³
у=2-3х²
2)у=-3х²+√х
у=-6х+1/(2√х)
3)у=2х^3/2
у=3х^1/2=3√х
4)у=2/5х²
у=(2(5х²)-2*(5х²))/(5х²)²=-4/5х²
5)у=7х²/(3х²-2)
у=((7х²)*(3х²-2)-(3х²-2)*(7х²))/(3х²-2)²=(42х³-28х-42х³)/(3х²-2)²=-28х/(3х²-2)
6)у=sinx+2^x
y=cosx+2^xln2
7)y=4lnX+√x
y=4/x+1/2√x
8)y=(5x²+1)(x³+x)=5x^5+x³+5x³+x=5x^5+6x³+x
y=25x⁴+18x²+1
9)y=x⁴/√x
y=((x⁴)√x-(√x)x⁴)/x=4x³√x-x⁴/2√x