exam Maths Puzzle Numerical Ability

Simplify each radical expression.
(sqrt2+ 3)^2

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exam Other Question

I really could use some help with this problem.

(SUM 14)(-0.4i+4)
i=1

I would appreciate any help that I can get. PLease help to simplify

4i^7 - the square root of -5 times the square root of -5 + the square root of 7 times the square root of -7 - the square root of -16