If f(x) = 3x² + 5x-4, then
f(x+h)-f(x)
h
(3x+3h)²+(5x+5h)-4-(3x²+5x-4)
h
3(x+h)2 +5x-4-3x²-5x+4
h
is equal to which of the following?
3(x+h)² +5(x+h)-4-3x²+5x-4
h
3(x2+2xh+h²)+5(x+h)-4-(3x2 +5x-4)
h