Here's a math problem for you

[Scripter]

I'm no good at calc, mostly because I never attempted to learn much of it. Using my quickly googled question however, I think I know how to get the derivative.
4x^2+2x+1
4x^2 + 2x
(2)4x^2 + 2x
8x^2 + 2x
8x + 2x
10x

Eh...that doesn't make sense. I'm going to try and learn it from a book instead of from ehow


And x-intercept?
y = 4x + 1
0 = 4x + 1
-1 = 4x
-1/4 = x

Is it -1/4? o.o