1) f(x)=4x²-6x, x0=2 2) f(x)=x²-2x, x0=3 3) f(x)=3x²-8x+7, x0=1 4) f(x)=3x-4x²+20, x0=-2

1. f(x) = 4x^2-6x
f`(x) = 8x - 6 
f(2) = 8*2 - 6 = 10 
2. f(x)=x²-2x, x0=3
f`(x) = 2x - 2 
f(3) = 2*3 - 2 = 4
3. f(x)=3x²-8x+7, x0=1
f`(x) = 6x - 8 
f(1) = 6-8 = -2
4. f(x)=3x-4x²+20, x0=-2 
f`(x) = 3-8x 
f(2) = 3-(-8) * (-2) = 3 + 16 = 19