Can anyone explain how this question is done! Thank you soo much!

Apply the Quadratic Formula

x = -b±√b²-4ac/[2a]

a=1

b=–5

c=3

Substituting these

x = –(–5) ±√5²-4x1x3/[2(1)]

x= 5 ± √25-12/[2]

x= 5 ± √13/[2]

SO WE HAVE 2SOLUTIONS

x= 5+√13 /[2] and 5–√13 /[2]

The question asked for the smaller solution

It can't be the first because the first is an addition

The smaller solution would be

x= 5–√13/[2]

OPTION C

9514 1404 393

  Hubsan's drone has the greater perimeter

Step-by-step explanation:

The area is given by the formula ...

  A = (1/2)Pa . . . . . where P is the perimeter and 'a' is the apothem

Then the perimeter is ...

  P 2A/a

__

For DJI's drone, ...

  P = 2(423)/10 = 84.6 inches

For Hubsan's drone, ...

  P = 2(410)/8 = 102.5 inches

Hubsan's drone has the greater perimeter.