tolong bantu ya guys..

1. 2x+3
2. 2x-2
3. f(x) = 4-x²
f'(x) = -x
f'(-3) = -(-3) = 3
4. f(x) = 6x-2x³
f'(x) = 6-2x²
f'(2) = 6-2(2²) = -2
5. f(x) = u/v => f'(x) = (u'v-uv') / v²
f(x) = x/x-1
u'= 1
v'= 1
f'(x) =(1(x-1)-x)/(x-1)²
f'(5) = 5-1-5/(5-1)² = -1/16