Who knows the answer to this

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

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

Which best explains why this triangle is or is not a right triangle ?