D = b^2 - 4ac
If the discriminant is,
- positive, there are 2 real roots
- 0, there is one root (irl there are 2 roots which are coincident)
- negative, no real roots
D --> (+) --> 2 real roots
D --> (0) --> 1 real root
D --> (-) --> No real roots
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Do 2013 DS 1st term paper 10th sum
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2020 NWP 2nd term grade 12
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Do this too, nice graph sum
