exam Maths Puzzle Numerical Ability

what is the value of the expression: 6(5 -3) - 4(2 - 5 - (3- 2)

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exam Other Question

What is the domain of State the domain of the following:

a)f(x)= the square root of x-8

Answer:

b)h(x)=3x squared + 5x-3
Answer:

c)mx=5/x squared +9

Answer:

d)l(x)=5x-4
Solve each of the following systems by using either addition or substitution (kind of like in Example 5 on p 715). If a unique solution does not exist, state whether the syste