(5x – 3 – x²) + (8x^2– 1+x)

7x^2+6x-4

Step-by-step explanation:

(-x^2+5x-3)+(8x^2+x-1)

Just combine like terms.

-x^2+8x^2= 7x

5x+x= 6x

-3-1= -4

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.