Question

Find the distance between (1,2) (-1,-2)
Helppp

Answer 1

4.472 units

Explanation:

1-(-1)=1+1=2

2-(-2)=2+2=4

2²+4²=c²

4+16=c²

20=c²

c=√20

c=4.472 units

Answer 2

2√5 ≈ 4.47214

Explanation:

You can draw a triangle with corner points (-1,2); (1,2) and (-1,-2), and the distance will be the hypotenuse, use pythagoras to solve:

√(2²+4²) = √20 = 2√5