When ever you combine different elements the chemical properties change because elements are different , unless you combine the exact same elements.
The answer is A(45) = -211
Using Pythagorean, a^2 + b^2 = c^2
16 +x^2 = 36.69
Then subtract the 16 from 36.69, which is 23.69
And finally take the square root of that, giving you 4.87
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