As we could "drag" these together, we could then do it the easy way.
56
+56
+56
-------
168
------------------------
Or we could also do the following:
56

3:
6

3= 18.
Carry the one.
5

3 = 15+1 (which was carried). = 16
(16+8) =
168
Plug in y into the other y
X-2 = -x + 4
Put unknowns on one side and knowns on other side
2x = 6
X= 3
No need to find y because only 1 answer has 3 as x.
Answer is (3,1)
The equation used in this problem is <span>f(x)=x^4−x^3−2x−4
The factored version is F(x)=(x-2)(x+1)((x^2)+2)
-I hope this is the answer you are looking for, feel free to post your questions here on brainly in the future.</span>