exam
Maths Puzzle
Numerical Ability
If x*+p is a factor of ax^+x*+kx+b, show that k=ap and b=p.
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exam Other Question
State the domain of the following:
m(x)=5/x^2+9
A 30% salt solution is prepared by mixing a 20% salt solution and a 45% salt solution. How many litres of each must be used to produce 60 L of the 30% salt solution?