Answer:
h= 42+m
h= 59cm
Step-by-step explanation:
It's a bit of a trick question. The principal square root of a real number, as indicated by the radical sign, is never negative. So if p is negative we'll get -p as the result. We write this with absolute value:

Answer:
first option is right
Step-by-step explanation:
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Step-by-step explanation:
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A = -56
B = -40
Length of AB = -56 + -40 = 16