I can't see the next photo but I'm assuming that's what you're asking
Answer:
5
Step-by-step explanation:
If you killed 30 and there were 34 people there not including me then there would be 5 left.
To solve:
find the square root of both sides
2x-3=±10
Answers:
x=-7/2
x=13/2
Since x represents the length (in meters), the width, which is 7 meters greater, is x +7. The product of these dimensions is the area (in square meters):
x(x +7) = 170
In standard form, the quadratic is ...
x² +7x -170 = 0