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✨ Jawaban Terbaik ✨

5.(a)
畫y=3
(b)
4x-10x²+2x³≥-11
x³-5x²+2x≥-11/2
x³-5x²+2x+11≥11/2
=>畫y=11/2

4.(a)
y=2
y=7

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