Grade 10 Mathematics Contest
Part A
Question #2
I find that this type of question can be very challenging. It's simple, but very tricky.
the value of (√100 - √36 )^2 is
a) 16 b) 6 c) 8 d) 1024 e) 4096
Because there are roots within the brackets, you must figure that out first before a number is squared. So the root of 100 is 10, and the root of 36 is 6. Therefore ten minus six equals to 4. 4 squared equals to 16.
Every time I try this on the calculator or in different ways, I get different answers. You are able to get almost all of them actually.. So if you don't know how to solve it, it is very difficult and can mess up the rest of your equation even just by this simple mistake.
Making a mistake like this has happened many times, especially in homework or in tests. It becomes very frustrating because it is just a simple mistake.
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