Cubic equations - mathcentre.ac.uk
Cubic equations mc-TY-cubicequations-2009-1 A cubic equation has the form ax3 +bx2 +cx+d = 0 where a 6= 0 All cubic equations have either one real root, or three real roots. In this unit we explore why this
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Cubic equations
www.mash.dept.shef.ac.ukCubic equations Acubicequationhastheform ax3 +bx2 +cx+d =0 wherea =0 Allcubicequationshaveeitheronerealroot,orthreerealroots. Inthisunitweexplorewhy thisisso. Then we look at how cubic equations can be solvedby spotting factors andusing a …