exam Maths Puzzle Numerical Ability

I am in need of some help

Use the ac test to determine if the following trinomial can be factored.
X^2+2x+3

Thank you

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exam Other Question

State the circle and radius of the circle given by (x-2)^2+(y+3)^2=20 Find the coordinates of the vertices of the figures formed by:

y≤x+2, x+y≤6, and y≥-2. I am having quite a bit of difficulty wity this one.