pdf, 486.59 KB
pdf, 486.59 KB
Everyone knows the quadratic formula, but what happens when pupils ask about a formula for solving cubics? A formula does exist, but it's a bit more complicated. It's given here, as a simple formula and also explained with an example.
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Reviews

4.7

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yshamji2020

3 years ago
5

MarkGreenaway

7 years ago
5

Nicely put together, a small group of students a year will benefit from this at our school.

DaveGale

7 years ago
4

This is a really nice extension activity (you'll know the right students for this). Also provides an opportunity for a pretty complicated substitution into expressions too.

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