The polynomial such that each expression can be written as the square of the difference of 2 polynomials is x^2-a^2
Sums of terms of the form kxn, where k is any number and n is a positive integer, make up polynomials. For instance, the polynomial 3x+2x-5. a description of polynomials.
By noticing which formulas only contain the operations of addition, subtraction, multiplication, and non-negative integer exponents, the polynomials may be located. Expressions with additional operations are considered non-polynomial expressions.
Usually we use the polynomial x^2-a^2 to make it look as the difference of other 2 polynomials,
Because it itself is a difference of 2 polynomials.
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