IM having very trouble understanding can anybody solve this for me

A polynomial function is a function that involves only non-negative integer powers or only positive integer exponents of a variable in an equation like the quadratic equation, cubic equation, etc. For example, 2x+5 is a polynomial that has exponent equal to 1.

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A polynomial function, in general, is also stated as a polynomial or polynomial expression, defined by its degree. The degree of any polynomial is the highest power present in it. In this article, you will learn polynomial function along with its expression and graphical representation of zero degrees, one degree, two degrees and higher degree polynomials. look over this and you will be able to work out the square properly.

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.