Answer:
{ 9/2 , square root of 100, 5.123}
Step-by-step explanation:
(6-√21, 6+√21)
x^2 - 12x = -15
(x - 6)^2 - 36 = -15
(x - 6)^2 = 21
x - 6 = ± √21
x = 6 ± √21
The answer is... 700