Kind of having trouble with grouping these two expressions. Can anyone help? −36x^{3} − 6x^{2} + 6x + 1 For this one I came up with: (1 - 6x^{2}) + (6x + 1) --- And then this one, which I know I got completely wrong.
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Originally Posted by wrongnmbr Kind of having trouble with grouping these two expressions. Can anyone help? −36x^{3} − 6x^{2} + 6x + 1 For this one I came up with: (1 - 6x^{2}) + (6x + 1) no --- And then this one, which I know I got completely wrong. $\displaystyle -6x^2(6x+1) + (6x+1) = (6x+1)(-6x^2+1) = (6x+1)(1-6x^2)$ $\displaystyle x^{-\frac{9}{2}}(25 + 10x + x^2) = x^{-\frac{9}{2}}(x+5)^2$
Originally Posted by wrongnmbr Kind of having trouble with grouping these two expressions. Can anyone help? −36x^{3} − 6x^{2} + 6x + 1 For this one I came up with: (1 - 6x^{2}) + (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} $
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