Find and simplify the expression if f(x)=x^2-1.
f(x-3)

Step-by-step explanation:

f(x)=x²-1

f(x-3)=(x-3)²-1

=x²-6x+9-1

=x²-6x+8

fahrenheit

step-by-step explanation:

fahrenheit is more precise than celsius. the ambient temperature on most of the inhabited world ranges from -20 degrees fahrenheit to 110 degrees fahrenheit—a 130-degree range. on the celsius scale, that range is from -28.8 degrees to 43.3 degrees—a 72.1-degree range. this means that you can get a more exact measurement of the air temperature using fahrenheit because it uses almost twice the scale.