Answer:
Ammm, I think the answer you have is wrong, but what I really think is that the equations you put in are not the right ones because the answer for these is "ugly" (decimals etc...). Want to check your equations?
Step-by-step explanation:
Here is a step by step explanation to your equations (I assumed +3z for the second but you can change it). You can edit it for your equations if you want to.
https://simplisico.com/share/q/QiWKOyN5uYgkSG4iBXOmdG0i
Step-by-step explanation:
option B is correct as,
10 + x = -18
→ x = -18 -10
→ x = -28
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Let point P be with coordinates
Find the equation of the tangent line.
1. If
then 
2. The equation of the tangent line at point P is

Find x-intercept and y-intercept of this line:
- when x=0, then

- when y=0, then

The area of the triangle enclosed by the tangent line at P, the x-axis, and y-axis is

Since point P is on the parabola, then
and

Find the derivative A':

Equate this derivative to 0, then

And

Answer: two points: 
Answer:
Step-by-step explanation: