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a) x^2 - 2kx + 16 b) (5k - 1)x^2 - 4x + (2k - 1) Do I solve these using the discriminant formula?

How do I find the domain and range of functions without having to draw it out or know the graph? I know for functions that have a square root the value under the square root can't be negative, or in a fraction the denominator cannot be zero, etc, so figuring out the domain isn't too hard, but...

s=ut+1/2at^2 v^2=u^2+2as What are these two formulas used for? I know that the first one can be used to find displacement but it can be figured out through s=vt

just want to know what stuff you learn and what the assessments are like for each course since I have to choose my prelim courses pretty soon

Where can I do work experience in psychology? I think UNSW may offer something but I'll have to email them as they don't have anything on their website. Can you guys suggest some other universities or companies that offer work experience or maybe some websites that provide a range of work...