Given the following equation x2 + 4x = 21 find the solutions. (Show All Work) 15a) Set the equation equal to 0 by inverse operations.

15b) Place the equation in factored form.

15c) Set each factor equal to 0 and solve for x.

I need help asap will give brainlist if answered and work is showed!

Step-by-step explanation:

15a)

              Subtract both sides by 21

15b)

7 and -3 multiply to -21 and add to 4

The factors are (x+7)(x-3)

15c)

x+7 =0

x=-7  

x-3=0

x=3              

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40