book Maths Puzzle Numerical Ability

I need to Simplify and express in simplest radical form.

How would I simplify

square root of m and square root of m^2

would I combine these to get

square root of m^2

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book Other Question

what is the direct variation if y=5 when x=10 find y when x=1 morgan company recieved from lee co an invoice dated 9/27 terms were 2/10 EOM. List price on the invoice was 5,000 freight not included. Morgan recieves a 9/7 chain discount. Fr