exam Maths Puzzle Numerical Ability

y = x - 2

(0, ), ( ,0), (5, )

Please help me to solve! thanks

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exam Other Question

Can you help me find the domain for the following?
f(x)=sqrt x-8
h(x)=3x^2+5x-3
m(x)=5/x^2-9
l(x)=5x-4
g(x)=7x+4/x+4 The equation x^3 = 9 + 46i where i = sqre root of -1 has a solution of the form a + bi where a and ba are integers. Find a + b.

I have this problem down to the system: a^3 - 3ab