Найдите производную функций а)f(x)=x^2-3x+1 в)f(x)=7x^8-8x^7

F'(x)=(x^2)'-(3x)'+(1)'=2x-3+0=2x-3
f'(x)=(7x^8)'-(8x^7)'=56x^7-56x^6

f(x)=x²-3x+1 

(x²-3x+1)' = (x²)' + (-3x)' + (1)' = 2x + (-3) = 2x-3

f(x)=7x⁸-8x⁷

(7x⁸-8x⁷)' = (-8x⁷)' + (7x⁸)' = (-56x⁶) + 56x⁷ = 56x⁷-56x⁶