exam Maths Puzzle Numerical Ability

Hi,
Can you help me with this math problem?

Find the maximum or minimum point of the function and state whether it is a maximum or minimum.
f(x)=2x^2+8x-2

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exam Other Question

i really need someones help with this problem

Find the slope of the line that passes through...
(-6,-5)and(4,1)
thanks a bunch
whats 10(0)(-7)?????????????