[Reposting because I never got help]

Is the polynomial a difference of squares? Select Difference of squares or Not a difference of squares for each polynomial.

y^4−25

20m^2n^2−121

p^8−q^5

16x^2−81

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)