Exam Maths Puzzle Algebra

if variable x is real then find the value of p such that equation 4x*x +px+1 is always positive.

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Quadratic Equation
1. x^2-5x+6 =0
2. x^2+13x+42 =0
3. x^2-11x+30 = 0
4. x^2+10x+21 = 0
5. x^2-12x+32 = 0
6. x^2+14x+45 = 0
7. x^2-11x+18 = 0
8. x^2-8x-48 = 0
9. x^2-8x-33 = 0
10. x^2+11+10 = 0
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