Answer:
x²-y² = 40
Step-by-step explanation:
Factorising x²-y²:
x²-y² = (x+y)(x-y)
This is due to the property that states:
a²+b² = (a+b)(a-b)
Substituting the given values into the above equation:
x²-y² = (10)(4)
= 40
Hence, x²-y² = 40
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Answer:

Step-by-step explanation:

Add 25 to both sides:


Square root both sides:
(Since a negative number multiplied by itself gives positive, there are two answers.)

Answer:
See explanation
Step-by-step explanation:
The question is incomplete. However, I'll solve on a general terms.
Since the robin, seagull and fish are on directly below one another; a possible question could be to calculate the distance between the robin and the clownfish
The given parameters are:



+ represents above sea level while i represents below
The distance is then calculated as:




Answer:
very much do not know
Step-by-step explanation: