exam Maths Puzzle Numerical Ability

I really would like some help on the rational addition expression...Thank you for all your help!!


n - 2 n^2 + 5n + 10
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n + 4 n + 4

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exam Other Question

Solve for k and graph on the number line:

5(k-3) - 7k (greater than of equal to) 4 (k-3) +9
F(x)= x(squared)- 3x
The difference quotient of a function f at x=a is defined to be the ratio [f(a + h) - f(a)]/h. find the difference quotient of each function at a=2.