Answer:
Option : The product of the roots is - 4
Step-by-step explanation:
Therefore the roots are -4 and 1
The product of the roots are -4 x 1 = -4
y=x-1
The marginal totals are the sum of each row and column.
For example, the total number of sophomores is 120 + 302 = 422.
See picture of table with marginal totals filled in.