book Maths Puzzle Numerical Ability

Please help:
If g(x)= 2x^2-5x-7
Find g(-1), g(2), g(-3), g(4)

Thanks

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book Other Question

I need help with simplifying expressions with fractions such as:

( 35 - 10q) ( - 2/5) Consider the parabola: y=x^2-6x+5
Complete the Square
Give the Vertex
Give the x- and y-intercepts
Graph the parabola

Could someone please help me with this problem? Thank you so very much.