Ignatius Yeo's answer to renee's Secondary 4 A Maths Singapore question.

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Ignatius Yeo
Ignatius Yeo's answer
36 answers (Tutor Details)
1st
For part ii), you may apply factor theorem to solve and proof whether the equation has one real root. Factor theorem must apply trial and error. Usually try values like -3,-2,-1, 1, ,2 ,3 or 0.5.