Answer:
20 -3p -p^2 = p- 1
20 -3p -p = p^2 -1
20 -4p = p^2 -1
20 +1 = p^2 +4p
21 = p^2 +4p
p^2 +4p -21
x = 15
Step-by-step explanation:
4x + 2 + 58 + 60 = 180
4x + 120 = 180
4x = 60
