2023 KSS P1 Q6

2023 KSS P1 Q6

Secondary 4
4 marks
  1. Express \(-2x^2-4x+3\) in the form \(a(x-h)^2+k\), where \(a\), \(h\) and \(k\) are constants.[3]
  2. Hence state the maximum value of the curve \(y=-2x^2-4x+3\).[1]

Solution:

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Answer:(i) \(-2(x+1)^2+5\). (ii) \(5\).

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