f(x)=(x+1)х
f'(x)=(x²+х)'=2x+1
f'(2)=2*2+1=5
f'(4)=2*4+1=9
f'(x)=2*x+1=2x+1
f'(x-2)=2*(x-2)+1=2x-1
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f(x)=(x+1)х
f'(x)=(x²+х)'=2x+1
f'(2)=2*2+1=5
f'(4)=2*4+1=9
f'(x)=2*x+1=2x+1
f'(x-2)=2*(x-2)+1=2x-1