If im correct it would be -2(2)+4(-2)-5 which is -4-8-5 which would be -17
It would be 2020-1836 = 184 years ago
Y = 5 - 4x
5 - 4x = x^2 - 2x - 19
0 = x^2 + 2x -24
0 = (x + 6)(x - 4)
Therefore x = -6 (Given) or 4
x = 4, y = -9
(4,-9) is the other solution
Answer:

Step-by-step explanation:
120cm^3