133.857142857 I’m not completely sure
Answer:
Step-by-step explanation:
I don't really know sorry I am not smart I only sign up to see the answers
Answer:
(5/2) ² or 25 /4
Step-by-step explanation:
x² - 5x - 18 = 0
x² -5x = 18
x² -5x + (5/2)²= 18 + (5/2)²