I don’t understand this equation can someone explain it to me and give me an answer

I Dont Understand This Equation Can Someone Explain It To Me And Give Me An Answer class=

Answer :

Answer:

-1 = -5

0 = 0

1 = -5

2 = -20

Step-by-step explanation:

im not sure if the answer is right but i hope it helps ^^

the website i used to find my answer is called desmos