exam Maths Puzzle Numerical Ability

cube root of 16x to the 6th

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exam Other Question

Help please

1) State the domain of the following:?
a) f(x)=cuberoot (x)-8

b) h(x)=3x^2+5x-3

c) m(x)=5x^2+9

d) l(x)=5x-4

e) g(x)=7x+4x+4 6 times the square root of x to the third power times y cubed over x times y
give this in the radical form