Question

HELP!!! VERY URGENT!!! Find the derivative of
f(x) = (x^2 - 4x)(√x - 1).

Answer 1

\[(x^2 - 4x)(\sqrt{x - 1} )\]
is is your question?

Answer 2

The √x is by itself.

Answer 3

http://www.wolframalpha.com/input/?i=derive+%28x%5E2+-+4x%29*%28sqrt%28x%29+-+1%29

Answer 4

\[\left( x^{2}-4 \right)\left( \sqrt{x}-1 \right)\]

Answer 5

4x

Answer 6

(5/2)x^(3/2) - 2x - 6x^(1/2) + 4

Answer 7

\[\frac{ 5 }{ 2 }x ^{\frac{ 3 }{2 }} - 2x - 6\sqrt{x} + 4\]

Answer 8

$$\bf
\left( x^{2}-4 \right)\left( \sqrt{x}-1 \right)\\
\implies \left( x^{2}-4 \right)\left( x^{\frac{1}{2}}-1 \right)
$$
then use the product rule

Answer 9

Could the answer also be , \[\sqrt{x}\left( \frac{ 5}{ 2}x - 6\right)-2x+4\]