Hey there, your answer should look like this:
4x²-2x²y-5x
Hope, this helped you :)
1/10 of 0.9= 0.09
8*10= 80
Are you trying to get the answer 80.09
Your graph should look exactly like the one below.
y = x + 2 (Black)
x + y = 3 (Red)
Now the solution is found in the intersection of the points, which is (0.5,2.5)
Verify:
y = x + 2
2.5 = 0.5 + 2
2.5 = 2.5 (correct)
Cheers