HELP ASAP I WILL GIVE BRAINLIST Is the set of rational expressions closed under ​subtraction​? Explain p(x) - r(x) =
q(x) s(x)

[1] YES. If q(x) and s(x) is not zero, then the rational expressions is closed under subtraction. The numerator is formed by multiplying and adding integers wherein the denominator is also an integer. If functions are subtracted, then it will yield an integer thus is a rational expression.

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.

it would open into a square depending on the type of envelope i’m not sure about the second part