exam Maths Puzzle Numerical Ability

If set A = {3,4,5,6,7} and set B = {1,2,3,4}:
(a) What is A (u shaped up i think it is called an union) B?
(b) What is A ( u shaped downward im not sure of what it is called) b

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exam Other Question
m
- + 6 = 3
4 Consider the function f(x)=x^2-6x+2

A) Find h,the x-coordinate of the vertex of this parabola.



B) Substitute the two integers immediately to the left of h and two int