book Maths Puzzle Numerical Ability

Help on this quadratic function -2x^2 +6x +2 i need..
1.standard form of f(x)=a(x-h)^2 + k
2.Find the Vertex
3.axis of symmetry
4.find maximum
5. find X and Y intercepts

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book Other Question

Which of the following is the greatest common factor of the terms 48s^5 t^3 u^2 and 40s^3 tu^4^? put three different numbers at each vertex of the triangle so that when you add the numbers at the end of each line you always get a square number.