Sim Ju Chuan's answer to m1205's Secondary 3 A Maths question.

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Sim Ju Chuan
Sim Ju Chuan's answer
2 answers (Tutor Details)
1st
Use properties of discriminant, if curve meet line, it can be 1 solution or 2 solutions. if line is a tangent to the curve then it's only 1 solution. if there's no solution then the line does not meet the curve.