8. The straight line with equation \(y = 3 x - 7\) does not cross or touch the curve with equation \(y = 2 p x ^ { 2 } - 6 p x + 4 p\), where \(p\) is a constant.
- Show that \(4 p ^ { 2 } - 20 p + 9 < 0\)
- Hence find the set of possible values of \(p\).
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