The quadratic function f(x) = x^2 + 8x + 17 is equal to zero when x - a + bi

x

2

−

8

x

−

17

=

0

Use the quadratic formula to find the solutions.

−

b

±

√

b

2

−

4

(

a

c

)

2

a

Substitute the values

a

=

1

,

b

=

−

8

, and

c

=

−

17

into the quadratic formula and solve for

x

.

8

±

√

(

−

8

)

2

−

4

⋅

(

1

⋅

−

17

)

2

⋅

1

Simplify.

Tap for more steps...

x

=

4

±

√

33

The result can be shown in multiple forms.

Exact Form:

x

=

4

±

√

33

Decimal Form:

x

=

9.74456264

…

,

−

1.74456264

…

Step-by-step explanation:

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.