I’ve been confused on this problem for awhile :(

D 7, -12 is the answer hope this helps✌

7, -12

Step-by-step explanation:

x^2+5x-84=0

(x-7)(x+12)=0

u have to always place the opposite for the answers

x= 7

x= -12

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)