exam Maths Puzzle Numerical Ability

# |z-i|2 and z0 = 5 + 3i ; The maximum value of |iz+z0| is _______
a) 2 + (31)
b) (31) - 2
c) 7
d) -7

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exam Other Question

Simplify:

12/(x+h+15) minus 12/(x+15) all divided by h
how do i do this?
Simplify the following fraction by putting it in lowest terms or by performing the indicated operation.


3xsq. ysq. -6xz over 6xsq. yz