1. -6x^2+31x+7
2. -20a^2+26a+21
3. 5x^2-10x
4. 7y^4-6y^6+3y^3+6y^5
5/ -4a^5+15a^3-4a^2+4a-a^4
6. 16b^4-10b^3-30b^2
7.l 16x^3-20x^2+1.5x-9x^4
8. -10xy^2+2xy-8y^3+8y^2-9
9. 6a^5+3a^4-2a^3+8a
<span>1)f(x)=sin(2x^2-3x+1)
f`(x)=(4x-3)cos(2x²-3x+1)
2)f(x)=tg(2x-3x^2)
f`(x)=(2-6x)/cos²(2x-3x²)
3)f(x)=cos^3(2x-1)</span>
f`(x)=-6cos²(2x-1)sin(2x-1)