Answer:
Supplementary: 126 degrees ( 180-54)
Complementary: 47degrees (90-43)
Hope it helps!!!
The expression can be simplified to a polynomial of degree 2.

<h3>
How to simplify the expression?</h3>
Here we have the expression:

We can directly simplify this by taking the variable as common factor:

This is a polynomial, as you can see, the maximum exponent is 2, so the degree of the polynomial is 2.
If you want to learn more about polynomials:
brainly.com/question/4142886
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Use the pythagoras theorem:-
diagonal = sqrt(2^2 + 4^2) = sqrt 20 = 4.47 feet to nearest hundredth.