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Answer:
a)(i)x2= -0.5
b)(ii)x3= -0.28125
Step-by-step explanation:
Sorry But I cannot explain the working out.
Refer to the diagram shown below.
In the diagram, the two vertices are located at (0, a) and (0, -a).
The equation for the parabola is

The asymptotes have the equations

For the given problem,
The vertices are located at (0, +/-10).
Therefore a = 10.
The asymptotes are

Therefore

Answer:
The equation of the parabola is
The answer is (2,1). 2*2=4 and 9*1=9. 9+4=13
Answer:
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Step-by-step explanation: