Thread: [SOLVED] quick question on simplifying

1. [SOLVED] quick question on simplifying

hey

(2x-1) square root 2x-1

thanks

2. $= (2x - 1)\sqrt{(2x + 1)}$

$= \sqrt{((2x + 1)}(2x - 1)^2)$

$= \sqrt{((2x + 1)}(4x^2 - 4x + 1))$

$= \sqrt{(8x^3 - 8x^2 + 2x + 4x^2 - 4x + 1)}$

$= \sqrt{(8x^3 - 4x^2 - 2x + 1)}$

(2x-1)^3/2 at the back of the book

4. Originally Posted by smmmc
(2x-1)^3/2 at the back of the book
That's because A Beautiful Mind misread the problem.

$(2x - 1)\sqrt{2x - 1}$
\begin{aligned}
&= (2x - 1)(2x - 1)^{1/2} \\
&= (2x - 1)^{3/2}
\end{aligned}

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