1. ## Grouping Expressions

Kind of having trouble with grouping these two expressions. Can anyone help?

36x36x2 + 6x + 1

For this one I came up with: (1 - 6x2) + (6x + 1)

---

And then this one, which I know I got completely wrong.

2. ## Re: Grouping Expressions

Originally Posted by wrongnmbr
Kind of having trouble with grouping these two expressions. Can anyone help?

36x36x2 + 6x + 1

For this one I came up with: (1 - 6x2) + (6x + 1) no

---

And then this one, which I know I got completely wrong.
$\displaystyle -6x^2(6x+1) + (6x+1) = (6x+1)(-6x^2+1) = (6x+1)(1-6x^2)$

$\displaystyle x^{-\frac{9}{2}}(25 + 10x + x^2) = x^{-\frac{9}{2}}(x+5)^2$

3. ## Re: Grouping Expressions

Originally Posted by wrongnmbr
Kind of having trouble with grouping these two expressions. Can anyone help?

36x36x2 + 6x + 1

For this one I came up with: (1 - 6x2) + (6x + 1)

---

And then this one, which I know I got completely wrong.
$\displaystyle \begin{array}{l} -36x^3-6x^2+6x+1\\-6x^2(6x+1)+(6x+1)\\-(6x+1)(6x^2-1) \end{array}$