Negating a fraction: Difference between revisions
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(Created page with "Category:Ambiguities When negating a fraction written on two lines, just putting a minus sign in front is easy to mistake for a long dividing line: \[ - \frac{x^3 + 3x^2...") |
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\[ - \frac{x^3 + 3x^2 - 5x +2}{25} \] | \[ - \frac{x^3 + 3x^2 - 5x +2}{25} \] | ||
To make it clearer, you could | To make it clearer, you could put brackets round the fraction: | ||
\[ - \left( \frac{x^3 + 3x^2 - 5x +2}{25} \right) \] | \[ - \left( \frac{x^3 + 3x^2 - 5x +2}{25} \right) \] | ||
Latest revision as of 13:49, 13 July 2021
When negating a fraction written on two lines, just putting a minus sign in front is easy to mistake for a long dividing line:
\[ - \frac{x^3 + 3x^2 - 5x +2}{25} \]
To make it clearer, you could put brackets round the fraction:
\[ - \left( \frac{x^3 + 3x^2 - 5x +2}{25} \right) \]
Or you could negate the numerator, but this introduces an opportunity to make a sign error.
\[ \frac{-x^3 - 3x^2 + 5x - 2}{25} \]
