- #1

trollcast

Gold Member

- 282

- 13

Is it okay to mix the types of brackets you use when writing out a solution to help make it a bit clearer?

For example:

If I was completeing the square with:

$$ 3x^{2} + 5x -2 = 0 $$

I would factor out the 3 onto square brackets like this:

[itex]3 \left[x^{2} + \frac{5}{3}x - \frac{2}{3} \right] = 0 [/itex]

Then do my competing the square with round brackets:

$$ 3 \left[ \left( x + \frac{5}{6} \right)^{2} -\left(\frac{5}{6}\right)^{2} - \frac{2}{3} \right] = 0 $$

For example:

If I was completeing the square with:

$$ 3x^{2} + 5x -2 = 0 $$

I would factor out the 3 onto square brackets like this:

[itex]3 \left[x^{2} + \frac{5}{3}x - \frac{2}{3} \right] = 0 [/itex]

Then do my competing the square with round brackets:

$$ 3 \left[ \left( x + \frac{5}{6} \right)^{2} -\left(\frac{5}{6}\right)^{2} - \frac{2}{3} \right] = 0 $$

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