Factorising quadratics - (easy)
(The third of three ways to solve (find the roots) of quadratics)
We know factors are found using ladders, and we know quadratics have an `x^2` term.
To factor a general quadratic formula as
`x^2+bx+c=0`
Use ladders as follows:
Remember
NOTE:
Find factors of `c` that add to give `b`.
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