Ireally have no idea how to solve this

What is the factored form of the following expressions? d^2 – 13d + 36

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.