Step-by-step explanation:

For the first one it is x=1 the second one X=8
2x - 1 + 3x = 0
2x + 3x - 1 = 0
(2 + 3)x - 1 = 0
5x - 1 = 0
Answer:
your answer is 0 because it's a horizontal line
A²=25 then a = + 5 & a =-5, so this ellipse intercepts the x axis at the points +5 & -5