exam Maths Puzzle Numerical Ability

Find the domain of the function #58 y equals 1/3x
#60 y equals 1/x + 2

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exam Other Question

please help to simplify

- the square root of -25 - the square root of 2 times the square root of -2 + the square root of -5 times the square root of -5 + 3i - 2i^2 - 3i^3 How do you factor this completely and does it have a GCF?

x^10y^3-4x^9y^-21x^8y