Answer:
1000
Step-by-step explanation:
Answer:
-7 and -5
Step-by-step explanation:
It is where the parabola intercepts the x axis which is -7 and -5
Answer:

Step-by-step explanation:
In the triangle ABC, m∠ABC=90°. Hence, it is right angle triangle.
--------1
In the triangle ABD, m∠ABD=90°. Hence, it is right angle triangle.

As
, so
---------2
From equation 1 and 2,




