Answer:
Can you type out the problem? It's hard to read but if you do then I can give you a step by step on how to find it
Step-by-step explanation:
In this question , Darko have to find the distance between A(3,-4) and B (-1,3) .
He uses the correct formula, which is

And on substituting the values , we will get

And in this line, Darko did the mistake .
1. x=-10
2. x=7
I’m pretty sure these are right :)
THEOREM:
- <u>Pythagorean theorem</u>:— In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides.
ANSWER:
By pythagorean property,
- x² = 12² + 9²
- x² = 144 + 81
- x² = 225
- x = √225
- x = 15 units.
So, <u>Correct choice</u> - [C] 15 units.